Class 6 Science

Light Shadows And Reflections Multiple Choice Questions

Question 1. Observe the picture given in the figure carefully.

A patch of light is obtained at B when the torch is lighted as shown. Which of the following is kept at position A to get this patch of light?

1. A wooden board
2. A glass sheet
3. A mirror
4. A sheet of white paper

Answer: 3. A mirror

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Question 2. Shadows may give us information regarding the

1. Size of the object
2. Surface
3. Shape of the object
4. Shape of the source

Answer: 3. Shape of the object

Question 3. The diagram shows a light source, an opaque object m and a screen

What will be the shape of the shadow on the screen?

Answer: 3

Question 4. Which of the following is not always necessary to 1 observe a shadow?

1. Sun
2. Screen
3. Source of light
4. Opaque object

Answer: 1. Sun

Question 5. Paheli observed the shadow of a tree at 8:00 AM, 12:00 noon and 3:00 PM. Which of the following statements is the closest to her observation about the shape and size of the shadow?

1. The shape of the shadow of the tree changes but the size remains the same.
2. The size of the shadow of the tree changes but the shape remains the same.
3. Both the size and shape of the shadow of the tree change.
4. Neither the shape nor the size of the shadow changes.

Answer: 3. Both the size and shape of the shadow of the tree change.

Question 6. Which of the following can never form a circular shadow?

1. A ball
2. A flat disc
3. A shoe box
4. An ice cream cone

Answer: 3. A shoe box

Question 7. A student observes a tree given in the figure through a pinhole camera. Which of the diagrams given in figures (1) to (4) depicts the image seen by her

Answer: 4

Question 8. Four students A, B, C and D looked through pipes of different shapes to see a candle flame 

Who will be able to see the candle flame?

1. 1
2. 2
3. 3
4. 4

Answer: 4. 4

Question 9. Two students while sitting across a table looked down True/False onto its top surface. They noticed that they could see their own and each other’s image. The table top is likely to be made of

1. Unpolished wood
2. Red stone
3. Glass sheet
4. Wood top covered with cloth

Answer: 3. Glass sheet

Question 10. The bouncing back of ray of light from the shining surface on which it was incident is known as

1. Refraction
2. Bending
3. Reflection
4. Dispersion

Answer: 3. Reflection

Question 11. Abha keeps a potted plant in front of a mirror

From which point, can Abha see the image of the plant in the mirror?

1. Point 1
2. Point 2
3. Point 3
4. Point 4

Answer: 3. Point 3

Question 12. Which of the following is a luminous object?

1. Chair
2. Book
3. Moon
4. Torch

Answer: 4. Torch

Question 13. Which of the following cannot give off its light?

1. Planet
2. Electric bulb
3. Torch
4. Sun

Answer: 1. Planet

Question 14. Sachin can see through the glass because the glass is

1. Transparent
2. Translucent
3. Opaque
4. Reflective

Answer: 1. Transparent

Question 15. Which of the following is always necessary to observe a shadow?

1. Screen
2. Opaque object
3. Source of light
4. All of the above

Answer: 4. All of the above

Question 16. There are mainly three types of objects, based on their properties. Are you able to look through a transparent object? Yes, you can. Because it has a property to pass the light through it. Objects that allow light to pass through them completely are known as transparent objects. Pure water, plane glass, air, etc., are examples of such objects. Can you look through a brick wall? Probably you cannot. Because brick walls cannot allow light to pass through them. Those objects which do not allow light to pass through them are known as opaque objects. Wall and wood are examples of such objects. The third type of object is one which partially allows light to pass through them. Such types of objects are known as translucent objects. Examples are tracing paper, bathroom window glass, butter paper, etc.
Answer:

1. Which of the following is an opaque object?

1. Glass
2. Cardboard
3. Air
4. Pure water

Answer: 2. Cardboard

2. A transparent object allows light to

1. Transmit completely
2. Bounce back
3. Partially pass
4. None of these

Answer: 1. Transmit completely

3. A butter paper is an example of

1. Translucent object
2. Transparent object
3. Luminous object
4. All of these

Answer: 1. Translucent object

Question 17. Kabir has four sheets made of different materials. He tries to see a burning candle through each of the four sheets.

The table shows Kablr’s findings:

1.  What can be concluded from Kabir’s activity?

1. Sheet 2 is made of a transparent material.
2. Sheet 4 is made of a translucent material.
3. Sheet 2 and Sheet 3 are made of opaque materials.
4. Sheet 1 and Sheet 4 are made of transparent materials.

Answer: 4. Sheet 1 and Sheet 4 are made of transparent materials.

2. Which of these should Kabir keep the same for the activity?

1. Size of the sheets
2. Size of the candle
3. Thickness of the sheets

Answer: 3. Thickness of the sheets

3. A burning candle emits light. Which of these objects can also emit light?

1. LED
2. Gold
3. Water
4. Mirror

Answer: 1. LED

4. Which of these works on the principle of reflection of light?

1. Television
2. Traffic signal
3. Periscope
4. Electric torch

Answer: 2. Traffic signal

NCERT Class 6 Science Chapter 9 Electricity And Circuits Long Question And Answers

Question 1. The picture shows an electric cell. Fill In the blanks boxes with the correct symbol (+/-) to show the terminals

Answer:

Question 2. Figures 1 and 2, show a bulb connected to a cell in two different ways

• Mention the direction of the current through the bulb in both cases
• Will the bulb glow in both cases?
• Does the brightness of the glowing bulb depend on the direction of current through it?

Read and Learn More Class 6 Science Question And Answers

Answer:

• The direction current will be from Q to P in A and the direction current will be from P to Q in B because the direction of current is always from the positive terminal to the negative terminal of the cell or battery.
• Yes, the bulb will glow in both cases because to glow the bulb, we just need to complete the circuit.
• No, the brightness ofthe bulb never depends upon the direction of the current passing through it.

Question 3. Boojho has a cell and a single piece of connecting wire. Without cutting the wire in two, will he be able to make the bulb glow? Explain with the help of a circuit diagram.
Answer:

This can be done by arranging the circuit as in the given
diagram.

One terminal should be connected to the other terminal of the cell directly and the other terminal can be connected using the given wire

Question 4. A torch requires 3 cells. Show the arrangement of the cells with a diagram inside the torch, so that the bulb glows.
Answer:

The arrangement of the bulb should be such that the positive terminal of a battery touches the base of the bulb. When switched ON, bulb will glow.

Question 5.  Explain why they would not glow in the arrangement

Answer:

Here, we must check two phenomena. One is the usage of conductors and the other is insulators which can stop the flow of electric current.

We observe that one end of the screwdriver is made up of metal and the other is made up of an insulator. Thus, electric current starts through one end but stops at the other end, and hence, current cannot flow through it. Thus, the bulb will not glow.

Question 6. Complete the drawing shown In the figure to Indicate where the free ends of the two wires should be joined to make the bulb glow

Answer:

To complete the circuit, we must join the one end of the wire with the free end of the cell. The other end of the wire must be connected to the bulb. Now, the bulb will glow.

Question 7. Paheli connected two bulbs to a cell as shown In the figure

She found that the filament of bulb B was broken. Will the bulb A glow in this circuit? Give reason.
Answer:

No, the bulb will not glow in the circuit because the filament of the bulb B is broken and current will not flow in the whole circuit, i.e. the circuit is broken or incomplete.

Question 8. In which of the following circuits 1, 2, and 3 given in the figure, the cell will be used up very rapidly?

Answer:

The cell will be used up rapidly in A because all the current will discharge through the wire very rapidly as any appliance is not connected between the positive and negative terminals.

Question 9. Will the bulb glow in the circuit shown in the figure? Explain

Answer:

As in the given circuit diagram, it seems that the switch is open, i.e. there is an air gap between the connecting wires, so the circuit is not complete and the bulb will not glow.

Question 10. You are provided with a bulb, a cell, a switch, and some connecting wires. Draw a diagram to show the connections between them to make the bulb glow.
Answer:

The complete circuit diagram, so that the bulb glows is given below

Question 11. Which of the following arrangements 1, 2,  3and 4 given In the figure should not be set up? Explain why,

Answer:

Arrangement A should not be a set-up because both the terminals of the electric cell connect directly without a switch and bulb, which causes chemicals in the cell used up rapidly.

Question 12. The diagram shows an electric circuit.

1. What will happen, if another battery is added to the circuit?
Answer: The bulb will glow more brighter

2. What is the direction of the flow of electric current in the circuit? Use small arrows to show the direction in the picture.
Answer:

Question 13. Sanjay saw a sign on an electric pole.
Answer:

1. What should Sanjay never do?

1. Play in a park near the pole
2. Touch the pole with bare hands
3. Park a bicycle in front of the pole
4. Walk on the footpath near the pole

Answer: 2. Touch the pole with bare hands

2. What makes the human body conduct electricity?
Answer:

The human body contains various ions like sodium ion, potassium ion, chloride ions, etc., which tend to conduct electricity. Thus, it makes the human body conduct electricity.

Question 14. Neeraj designed an electric circuit as shown below

He filled the gap in the circuit with four different objects, one at a time.

The table shows Neeraj’s findings:

1. Which question can be answered through Neeraj’s activity?

Choose Yes or No for the correct response:

Answer:

1. Yes

2. yes

3. No

2. Which safety measures must Neeraj follow during the activity?

1. Wear an apron
2. Wear a face mask
3. Wear a pair of goggles
4. Wear a pair of rubber gloves

Answer: 4. Wear a pair of rubber gloves

3. Neeraj repeated the activity using the same four objects. This time the bulb did not glow for any of the four objects. What could be the most likely reason for this?
Answer:

• The circuit may not be properly connected.
• The bulb may be fused. Or Chemicals in cells are used up

NCERT Class 6 Science Chapter 9 Electricity And Circuits Short Question And Answers

Question 1.  Paheli has another arrangement of the cell and the bulb. Will the torch bulb glow in the following arrangement?

Answer:

The bulb is connected to the cell directly at one terminal and the other terminal is connected to the negative of the cell with a wire. So, the bulb will glow.

Question 2. Boojho has drawn the inside structure of the torch as shown In the figure. When we close the switch, the circuit Is completed and the bulb glows. Can you draw a red line on the figure indicating the complete circuit?

Answer:

Question 3. What is the purpose of using an electric switch? Name some electrical gadgets that have switches built Into them.
Answer:

The switch is a simple device that is used to either break the electric circuit or to complete it. With the help of a switch, we can use an appliance according to our desire. The switches used in the lighting of electric bulbs and other devices in the homework are on the same principle.

 Some electrical gadgets that have switches built into them are as follows:

• Torch
• Table fan
• Television set
• Radio
• Electric iron

Question 4. Would the bulb glow after completing the circuit shown If Instead of the safety pin, we use an eraser?
Answer:

Since the eraser is an insulator that means it is a bad conductor of electricity. So, conduction of electric current is not possible, Thus, if instead of the safety pin, an eraser is used, the bulb will not glow.

Question 5. Would the bulb glow in the circuit?

Answer:

In the given figure, the bulb will not glow because the two terminals of the connecting wire of the cell are connected to the same terminal of the bulb.

Question 6. Using the conduction tester on an object, It was found that the bulb begins to glow. Is that object a conductor or an insulator? Explain.
Answer:

As we have found using a conduction tester on an object, the bulb begins to glow which is possible only when electric current flows through it. We know that electric current flows only through the conductors. Thus, the object is a conductor that allows electric current to pass through it.

Question 7. Why should an electrician use rubber gloves while repairing an electric switch at your home? Explain.
Answer:

An electrician should use rubber gloves while repairing an electric switch because rubber is an insulator that does not allow an electric current to pass through it. Thus, it prevents his body from getting electric shocks. On the other hand, the human body is a conductor of electricity, so it is necessary to prevent it from electric shocks.

Question 8. The handles of the tools like screwdrivers and pliers used by electricians for repair work usually have plastic or rubber covers on them. Can you explain, why?
Answer:

As we know, the human body is a good conductor of electricity. So, it is necessary to prevent it from electric shocks. On the other hand, plastic and rubber are insulators that do not allow electricity to pass through them, Hence, electricians use screwdrivers and pliers that have plastic or rubber covering on them for repairing work

Question 9. When the chemicals in the electric cell are used up, the electric cell stops producing electricity. The electric cell is then replaced with a new one. In case of rechargeable batteries (such as the type used in mobile phones, cameras, and inverters), they are used again and again. How?
Answer:

A rechargeable battery has such chemicals which after use can be restored by passing a suitable current in the opposite direction to the rechargeable batteries, so it can be used again and again.

Question 10. Briefly explain the components present inside the cell.
Answer:

The cell consists of a carbon rod present at the center of the zinc container. By the side, a metal cap is present which is a positive terminal, and opposite to that is a metal disc which is a negative terminal.

Question 11. Why do bulbs have two terminals?
Answer:

The bulb has two terminals because it is connected to the terminals of a cell or a battery so that current passes through the filament.

Question 12. Discuss briefly that how the switch works,
Answer:

A device that is used to close or open a circuit is known as a switch, so when we open the switch, there exists an air gap that does not allow the current to pass through it. On the other hand, when it is closed, then there is not any existence of a gap between the wires and therefore in this way, it conducts electricity.

Question 13. An electric bulb is connected to a cell through a switch as shown in the figure. When the switch Is brought in the ON position, the bulb does not glow. What could be the possible reasons for it? Mention any two of them.

The possible reasons why the even at switching ON position bulb is not glowing are

1. The cell may be discharged.
2. The filament wire of the bulb may be broken.

Question 14. A torch is not functioning, though contact points In the torch are in working condition. What can be the possible reasons for this? Mention any three.
Answer:

The possible reasons for the not functioning of the torch may be

1. The torch bulb may be fused.
2. The cell may be discharged.
3. The connecting wires may be broken up

Question 15. Pallavi is preparing a torch in her house with her friend Radhika. But even after completing the circuit, the bulb didn’t glow Radhika advised her to check the correct sequence of cells used

State the values reflected by Radhika here. Explain what can be the reason for not glowing the bulb.

• Radhika has good knowledge of electrical circuits and its uses. She is also cooperative with her friends.
• There may be an incorrect sequence of cells that is used by her.

Question 16. As we know, silver is the best conductor of electricity instead of this we use copper and aluminum. Why?
Answer:

Among copper, silver, and aluminum, we use copper and aluminum for household wires because copper and aluminum are much cheaper than silver. It is also heavier than copper and aluminium.

Question 17. Sita is operating a base electric wire so that its electric iron can be used safely. Her friend Vimlesh advised her not to do so without plastic gloves. Mention the values that Vimlesh shows here. A plastic glove is an insulator or conductor.
Answer:

Vimlesh is intelligent and has good knowledge of current and its hazards. A plastic glove is an insulator. It does not conduct electricity.

Question 18. With the help of a labeled diagram, explain the structure and function of a torch.
Ans.

An electric torch is a device which is used as a lamp. It has two or more than two cells, a bulb, and a switch.

So, when we slide the switch (ON position) of the electric torch, the circuit becomes complete and the bulb starts glowing, while on the sliding switch back OFF position, the circuit gets broken and the bulb goes off.

Question 19. If we touch a bare wire and we are in contact with the earth, then we can get an electric shock and if we are standing above a plastic or dry wood chair, then even on touching the bare wire, we will not get any electric shock. Explain why.
Answer:

Current can only flow through a body if it gets the way to pass through it. In the case of the earth, it gets the way from bare wire to your body to the earth. In the case of plastic chairs or dry wood chairs, it doesn’t get the way to flow. So, you don’t get any electric shock

NCERT Class 6 Science Chapter 9 Electricity And Circuits Very Short Question And Answers

Question 1. Mention the way through which an electric cell can produce electricity.
Answer:  A chemical reaction is a way through which an electric cell can produce electricity.

Question 2. Give the name of a portable electric lamp that works on cells.
Answer: A torch is a portable electric lamp that works on cells.

Question 3. What does the positive terminal of dry cells consist
Answer: The positive terminal of the dry cell consists of carbon.

Question 4. Name the glowing part of an electric bulb.
Answer: The glowing part of an electric bulb is its filament.

Question 5. When you switch ON the torch, which part of the bulb glows?
Answer: When you switch ON the torch, the filament part ofthe bulb glows

Question 6. The electric cell and the bulb both have two terminals. Explain why?
Answer: The electric cell and the bulb both have two terminals, that ther e will be a path for the flow of electricity in a complete circuit.

Question 7. A fused bulb does not glow. Why?
Answer: A fused bulb does not glow because in a fused bulb, the filament of the bulb burns up and the connection is broken or incomplete, so the current cannot flow.

Question 8. What Is the advantage of using a switch in a circuit?
Answer: The advantage of using a switch is to either make or break the electric circuit.

Question 9. Name the device which is used to break an electric circuit.
Answer: Switch

Question 10. Define switch.
Answer: A simple device that is used to either break the electric circuit or to complete it, is known as an electric switch.

Question 11. Paheli wanted to glow a torch bulb using a cell. She could not get connecting wires instead she got two strips of aluminum foil. Will she succeed? Explain how.
Answer: Yes, she will succeed because aluminum is a conductor of electricity, it will complete the electrical circuit and the bulb will glow.

Question 12. We should use plastic gloves for operating electrical devices. Explain why.
Answer: To avoid electric shocks, we should use plastic gloves for operating electrical devices.

Question 13. State whether electricity can pass through glass. If not, then explain the reason.
Answer: Electricity cannot pass through glass because it is an insulator.

Question 14.  What are the purposes for which you use electricity?
Answer: We use electricity for many purposes to make our tasks easier. For example, we uses electricity to operate pumps that lift water from wells or ground level to the rooftop tank.

Question 15. Where does the torch get electricity from?
Answer: Electric cells are kept inside the torch so, it provides electricity.

Question 3. Did you notice the positive (+) sign and a negative (-) sign marked on the electric cell?
Answer: The sign (+) represents the positive terminal and the sign (-) represents the negative terminal of an electric cell.

Question 16. What Is inside the glass case of the bulb?
Answer: Filament is inside the glass case of a bulb.

Question 17. Why do electric bulbs and electric cells have two terminals?
Answer: A circuit can be completed only when there is both a positive and negative terminal such that current flows.

Question 18. Mention what type of materials can be used in electric circuits, so that the current can pass through them.
Answer: Mention what type of materials can be used in electric circuits, so that the current can pass through them such as metals (aluminum, copper, iron, etc).

NCERT Class 6 Science Chapter 9 Electricity And Circuits Fill In The Blanks

Question 1. The thin wire that gives off light in an electric bulb is called _____________
Answer: Filament

Question 2. Cell that can be recharged is called _____________
Answer: Secondary cell

Question 3. A bulb is glowing in an electric circuit, that means it is a _____________ circuit.
Answer: Closed

Question 4.  _____________ makes the human body to conduct electricity.
Answer: Ions

Question 5. Chemicals used in electrical cell are_____________
Answer: Ammonium chloride and zinc chloride

Question 6. An electric cell converts chemical energy into _____________
Answer: Electrical energy

Question 7. A power station provides us _____________
Answer: Electricity

Question 8. The electric cell and bulb have_____________ terminals.
Answer: Two

Question 9. In bulb_____________  glows.
Answer: Filament

Question 10. A complete circuit contains bulb _____________  and _____________
Answer: Switch  And Cell

Question 11. A device which makes or breaks the circuit is called _____________
Answer: Switch

Question 12. Materials that allow electricity to pass through them are called
_____________
Answer: Conductors

Question 13. The handle of an electrician’s screwdriver is made up of _____________
Answer: Insulator

Question 14.  Materials that do not allow electricity to pass through them are called_____________
Answer: Insulators

Question 15. A device which is used to break an electric circuit is called ________________
Answer: Switch

Question 16. An electric cell has ________________  terminals.
Answer:  Two

NCERT Class 6 Science Chapter 9 Electricity And Circuits True/False

Question 1. A cell is a device that can produce current.
Answer: True

Question 2. A car battery contains many cells.
Answer: True

Question 3. The combination of two or more cells is called a circuit.
Answer:  False

A combination of two or more cells is called a battery

Question 4. Dry cell converts electrical energy into chemical energy
Answer: False

Dry cell converts the chemical energy into electrical energy

Question 5. When the filament of a bulb gets broken, it is termed as fused.
Answer: True

Question 6. The filament is a thin wire that gives off the light.
Answer: True

Question 7. The filament of a bulb is made up of aluminum.
Answer:  False

The filament of a bulb is made of tungsten.

Question 8. A closed circuit is known as a switch ON.
Answer: True

Question 9. Saltwater is a good conductor of electricity.
Answer: True

Question 10. Handles of electrical appliances are made up of insulators.
Answer: True

Question 11. The metal cap in an electric cell acts as a positive terminal.
Answer: True

Question 12. An electric bulb has three terminals.
Answer: False

Question 13. Electric currents do not flow through metals.
Answer: False

Question 14. Mark True or False for the following statements
Answer: True

Question 15. Electric current can flow through metals.
Answer: False

As jute is an insulator and hence, current cannot pass through it. Thus, in a circuit, we need conductors through which electric current can pass.

Question 16. Instead of metal wires, a jute string can be used to make a circuit.
Answer: False

As thermocol is an insulator, thus electric current cannot pass through it

Question 17. Electric current can pass through a sheet of thermocol
Answer: False

As thermocol is an insulator, thus electric current cannot pass through it

NCERT Class 6 Science Chapter 9 Electricity And Circuits Assertion-Reason Questions

The following questions consist of two statements Assertion and Reason (R). Answer these questions by selecting the appropriate option given below

1. Both A and R are true and R is the correct explanation of A
2. Both A and R are true but R is not the correct explanation of A.
3. A is true but R is false
4. A is false but R is true.

Question 1.

Assertion (A): The Plastic coating of connecting wires should be removed before making circuits.

Reason (R): Plastic is an insulator, it does not allow electric current to flow through it.

Answer:  1. Both A and R are true and R is the correct explanation of A

Plastic coating should be removed before making the circuit, if not removed, then it does not allow current to pass through it

Question 2.

Assertion (A): Electricians are provided with rubber gloves while working on electric poles.

Reason (R): Rubber is a conductor, it does not allow electricity to pass through it and saves from getting electric shock.

Answer:  3. A is true but R is false

Rubber gloves are provided to electricians because rubber is an insulator and this saves them from getting an electric shock

Question 3.

Assertion (A): A fused bulb glows, when it is connected to the cell.

Reason (R):  A bulb gets fused, when there is a break in the filament.

Answer:  4. A is false but R is true.

A bulb gets fused, when there is a break in the filament and a fused bulb does not glow when it is connected to the cell.

Question 4.

Assertion (A): The human body does not allow electric current to pass through it.

Reason (R): The materials which allow electric current to pass through it are called conductors

Answer:  4. A is false but R is true.

The human body is a conductor of electricity and conductors are those materials which allow electricity to pass through them

Question 5.

Assertion (A):  An electric bulb glows, when electricity passes through its filament.

Reason (R):  Filament is made up of aluminum.

Answer: 3. A is true but R is false

Question 6.

Assertion (A): Ocean water is a good conductor of electricity.

Reason (R): The salts present in ocean water make it a good conductor.

Answer: 1. Both A and R are true and R is the correct explanation of A

NCERT Class 6 Science Chapter 9 Electricity And Circuits Match The Columns

Question 1. Match the Column A with Column B

Answer: 1- D, 2- C, 3-2, 4- 1

Question 2. Match the Column A with Column B

Answer: 1- B, 2- A, 3-C, 4- D

Electricity And Circuits Multiple Choice Questions

Question 1. The metallic cap of an electric cell is a

1. Positive terminal
2. Negative terminal
3. Neutral
4. None of the above

Answer: 1. Positive terminal

Question 2. The number of terminals in an electric cell is

1. Three
2. One
3. Two
4. Four

Answer: 3. Two

Question 3. The filament of a torch bulb is made up of

1. Tungsten
2. Copper
3. Brass
4. Iron

Answer: 1. Tungstren

Question 4. A device that is used to close or open the electric Circuit is called

1. Switch
2. Conductor
3. Battery
4. None of the above

Answer: 1. Switch

Read and Learn More NCERT Class 6 Science MCQs

Question 5. Iron is an example of

1. Insulator
2. Non-metal
3. Three
4. Two

Answer: 2. Non-metal

Question 6. The metal disc of the electric cell is

1. A positive terminal
2. A negative terminal
3. Sometimes negative and sometimes positive
4. None of the above

Answer: 2. A negative terminal

Question 7. Which device needs an electric cell to work?

1. Water heater
2. Mobile phone
3. Mixer grinder
4. Microwave oven

Answer: 2. Mobile phone

Question 8. In an electric bulb, light is produced due to the glowing of

1. The glass case of the bulb
2. The thin filament
3. The thick wires supporting the filament
4. Gases inside the glass case ofthe bulb

Answer: 2.  The thin filament

Question 9. The filament of a torch bulb is

1. A metal case
2. Metal tip at the center ofthe base
3. Two thick wires
4. The thin filament

Answer:  4. The thin filament

Question 10. Choose the figure from the options (1), (2),  (3) and (4) given below which shows the correct direction of current

Answer: 2.

Question 11. An open circuit is called

1. Switched ON
2. Switched OFF
3. Both (1) and (2)
4. None of the above

Answer: 2. Switched OFF

Question 12. When a fused bulb is connected to a circuit, It

1. Does not glow
2. Glows
3. Both  1 and 2
4. None of these

Answer: 1. Does not glow

Question 13. Choose the incorrect statement.

• A switch is the source of electric current in
• A switch helps to complete or break the circuit
• A switch helps us to use electricity as per our requirement.
• When the switch is open, there is an air gap between its terminals

Answer: 1. A switch is the source of electric current in

Question 14. In the circuit shown in the figure, when the switch is moved to the ON position

1. The bulb A will glow first
2. The bulb B will glow first
3. The bulb C will glow first
4. All bulbs will glow together

Answer:  4. All bulbs will glow together

Question 15. A device that breaks the circuit is called

1. Filament
2. Bulb
3. Switch
4. None of these

Answer: 3. Switch

Question 16. In the following arrangement, the bulb will not glow, if ends A and B are connected

1. A steel spoon
2. A metal clip
3. A plastic clip
4. A metal clip

Answer: 3. A plastic clip

Question 17. Paheli is running short of connecting wires. To complete an electric circuit, she may use a

1. Glass bangle
2. Thick thread
3. Rubber pipe
4. Steel spoon

Answer:  4. Steel spoon

Question 18. Our body is 

1. A bad conductor of electricity
2. Sometimes a good conductor and sometimes a bad conductor
3. A good conductor of electricity
4. None of the above

Answer: 3.  A good conductor of electricity

Question 19. Wet rubber is a

1. Conductor
2. Semiconductor
3. Insulator
4. None of these

Answer: 1. Conductor

Question 20. Conductors and insulators both are important in our daily lives. Mostly all the wires are covered with a plastic layer, because if we use the bare wires, we may get electric shock. Some objects like switch board, sockets, and plugs all are made up of insulators. You must have seen the electric poles in your locality that carry electric wires. These wires are made up of aluminium, and copper and carry a high voltage. Conductors are made for carrying electricity while insulators are made for safety uses. Hence, both conductors and insulators are equally important for 

1. Which of the following are conductors

1. Iron, steel, tap water
2. The human body, glass, wood
3. Pure water, plastic, rubber
4. None ofthe above

Answer:  1. Iron, steel, tap water

2. Materials that allow an electric current to go through them are called

1. Insulator
2. Conductor
3. Both 1  and 2
4. None ofthe above

Answer:  2. Conductor

3. Insulation is used in the electric wire to prevent it from

1. Short-circuit,
2. Electric shock
3. Fuse
4. Both 1 and 2

Answer:  4. Both 1 and 2

4. Which of the following is the best conductor of electricity?

1. Silver
2. Rubber
3. Dry air
4. All of these

Answer:  1. Silver

NCERT Class 6 Science Chapter 10 Fun With Magnets Long Question And Answers

Question 1. Suggest an arrangement to store a U-shaped magnet. How is this different from storing a pair of bar magnets?
Answer:

It is a suggested way given below

U-shaped magnet is kept along with an iron piece while bar magnets are kept in pairs with opposite poles on the same side along with iron strips and magnets separated by wood along their length.

Read and Learn More Class 6 Science Question And Answers

Question 2. A bar magnet is cut into two pieces A and B from the middle as shown in Figure

Will the two pieces act as individual magnets? Mark the poles of these two pieces. Suggest an activity to verify your answer
Answer.

Yes, two pieces will work as an individual magnet because a monopole (single pole) of a magnet never exists

Activity

• Place the magnet, so formed (A and B) on the table.
• Bring die north pole of both magnets towards each other, they will be repelled.
• Bring the north and south poles of both magnets towards each other, they will attract

Question 3. Given below is a figure which shows a magnetic compass. Briefly explain what will happen to the position of its needle, if you bring a bar magnet near it. Also, draw a diagram to show the effect on the needle on bringing the bar magnet near it. Also, draw the diagram to show the effect when the other end of the bar magnet is brought near it.

Answer:

When we bring a bar magnet near the compass, the needle of the magnetic compass starts deflecting. As the north pole of the magnet is brought closer to the compass, the south needle of the compass points towards it As the south pole of the magnet is brought closer to the compass, the north needle of a compass points towards it

Question 4. Three identical bars are kept on a table. Two out of three bars are magnets. In one of the magnets, the north-south poles are marked. How will you find out which of the other two bars is a magnet? Identify the poles of this magnet.
Answer:

To find out the magnet

• Take the bar magnet A in your hand.
• Take the bar magnet B in the other hand.
• Bring one side of B towards the south pole and note down
• It is attracted or repelled.
• Bring the other side of B towards the south pole and again note down the same thing.
• If there is an attraction in both cases
• It is an iron bar.
• If there is an attraction in one case and repulsion in
• other cases, then it is a bar magnet
• Do the same for the iron bar C.

To find out the poles

If in case 3. the bar is attracted, then it is the north pole of the identified bar magnet. If the bar is repelled, then it is a south pole of the identified bar magnet

Question 5. A compass is an instrument which is used to find the direction and it consists of a small metal needle which is magnetised and is free to turn in any direction. It has a dial with directions marked on it. The picture shows a magnetic compass and the sun to its east. The four arrows point towards different directions

1. Which arrow is pointing towards the north?

1. Arrow 1
2. Arrow 2
3. Arrow 3
4. Arrow 4

Answer: 3. Arrow 3

Question 6. A magnetic compass is placed just beside a bar magnet. Will the compass now show direction correctly? Explain
Answer:

No, the compass will not work properly due to the interference ofthe magnetic field of the bar magnet

Question 2.

What does Sudhir’s activity show?

1. Bar 1 is made of iron
2. Bar 2 is made of nickel
3. Bar 3 is made of silver
4. Bar 4 is made of cobalt

Answer: 2. Bar 2 is made of nickel

Question 7. Sudhir repeats the activity using metal wires in the place of metal bars.

Answer:

The results will be the same as before

Question 8.  Column 1 shows different positions in which one pole of a magnet is placed near that of the other. Column 2 indicates the resulting action between them for each situation.

Answer:

As we know poles of a magnet repel each other and unlike poles attract each other. Thus, the complete table is shown as below.

NCERT Class 6 Science Chapter 10 Fun With Magnets Short Question And Answers

Question 1. Boojho dipped a bar magnet in a heap of iron filings and pulled it out. He found that iron filings got stuck to the magnet as shown in figure

1. Briefly tell the regions of the magnet that have more iron filings sticking to it.
2. Mention what are these regions called.

Answer:

1. Pole regions of the magnet have more iron filings sticking to it.
2. These are called the North Pole and the South Pole, respectively.

Question 2.  Write any two properties of a magnet.
Answer:

• The two properties of a magnet are as follows
• A magnet always has two poles, i.e. north and south.
• It attracts magnetic materials like iron, nickel or cobalt.

Question 3.  Where are the poles of a bar magnet located?
Answer:

The poles of a bar magnet are located at the two ends of a bar magnet as shown below

These two poles are the north pole (N) and the south pole (S).

Question 4. A bar magnet has no markings to indicate its poles. How would you find out near which end is its north pole located?
Answer:

We can find out direction by freely suspending a bar magnet. We will find that a freely suspended bar magnet always comes to rest in the north-south direction. The end ofthe magnet that points towards the north is called a north pole. The other end that points towards the South is
called the South Pole.

Question 5. Boojho kept a magnet close to an ordinary iron bar. He observed that the iron bar attracts a pin as shown in figure

Question 6.  What inference could he draw from this observation? Explain.
Answer:

When we place any iron bar near a bar magnet, it becomes a temporary magnet and small objects like pins, iron filings can be attracted by it. But when we remove this bar from magnet, it again becomes an iron bar and does not attract the small iron objects.

Question 2. Kanchan is a class 6 student. She has to show an activity in the school exhibition but she has no idea. Her friend Suresh advised her to do an activity in which rope stands without any support with the help of a magnet and asked her to take a small rope, a magnet, a cup and a stand.

1. State the values that Suresh reflects here.
2. Name some non-magnetic materials.

Answer: 

1. Suresh is a cooperative, intelligent and creative boy.
2. Some non-magnetic materials are plastic, stainless steel, glass, fibre, etc.

Question 7. Explain how will you test that the ‘tea dust’ is not adulterated with iron powder.
Answer:

We can do a simple experiment for this

• Take tea dust on a piece of paper.
• Take a bar magnet in your hand.
• Shake the bar magnet over this dust.
• If some particles are attracted strongly towards this magnet, then definitely tea dust will have iron powder.

Question 8. Four identical iron bars were dipped In a heap of iron filings one by one. The figure shows the amount of Iron filings sticking to each of them.

1. Which of the iron bars is likely to be the strongest magnet?
2. Which of the iron bars is not a magnet? Justify your answer.

Answer:

1. The iron bar seems to be the strongest magnet because it has the maximum amount of iron filings attracted.
2. Iron bar Is not a magnet because no iron filings have been attracted by it.

Question 9. Explain whether the magnetic poles exist separately like charges or not.
Answer:

When we break a magnet from its middle, then we get two new magnets. Even if an extremely small magnet is broken into two pieces, then they will have north and south poles, i.e. a small bar magnet is obtained. So, the magnetic poles can’t exist separately like charges.

Question 10. Priya went to a place for her summer vacation with her sister Monami Mukherji. As the day was dark, so she couldn’t confirm that in which direction was east. Her sister had a magnetic compass and she told Priya to find the direction with the compass.

1. State the values that Monami Mukherji reflect here.
2. Mention what happens to a freely suspended magnet.

Answer:

1. Monami is an intelligent and caring girl.
2. A freely suspended magnet orients in the self north-south direction ofthe earth.

Question 11. A toy car has a bar magnet hidden inside its body along its length. Using another magnet, how will you find out which pole of the magnet is facing the front
Answer:

If we face the north pole towards the front side ofthe car and the car is attracted, it means its front side pole is the south pole and if it is going away, it means its front side is the north pole.

Question 12. State the ways through which a magnet can be demagnetised

There are two ways to demagnetise a magnet

1. By heating
2. By hammering

 

NCERT Class 6 Science Chapter 10 Very Short Question And Answers

Question 1. A tailor was stitching buttons on his shirt. The needle slipped from his hand onto the floor. How can you help the tailor to find the needle?
Answer:

We can help the tailor find the needle by using a magnet.

Question 2.  You are given two identical bars which look as if they might be made of iron. One of them is a magnet, while the other is a simple iron bar. How will you find
Answer:

It can be found out by sprinkling some iron filings on both bars. Iron filings get attracted towards magnets but not towards iron bars.

Question 3. Do the materials other than magnet also come to rest in the same direction in the statue of the Emperor’s out, which one is a magnet?
Answer: No

Question 4. How can you find the direction of your classroom from the main gate of your school?
Answer:

We can find the direction of our classroom from the main gate of the school with the help of a bar magnet.

Question 5. What will happen if a magnet is brought near a compass?
Answer:

If a magnet is brought near a compass, the south pole of the compass is attracted towards the north pole of the magnet and the north pole of a compass is attracted towards the south pole of the magnet

Question 6. Give the name of a natural material that acts as a magnet.
Answer:   Magnetite is the name of a natural material which acts as a magnet.

Question 7. Is the soil a magnetic or a non-magnetic material?
Answer:  The soil is generally a non-magnetic material but some iron filings are available in the soil which can stick to magnets.

Question 8. Mention the name of the magnet used in the electrical bell.
Answer: The magnet which is used in electrical bell is a horse-shoe magnet.

Question 9. Paheli and her friends were decorating the class bulletin board. She dropped the box of stainless steel pins by mistake. She tried to collect the pins using a magnet. She could not succeed. What could be the reason for this? Competency Based Que.
Answer: She could not succeed because the stainless steel pins were not made of iron, so they were not attracted towards magnets.

Question 10. Name the instrument utilised in finding the direction.
Answer: The magnetic compass is the instrument used to find the direction

Question 11. In which direction, a freely suspended magnet orient itself?
Answer: A freely suspended magnet orients itselfin the north-south direction

Question 12. In which direction, does the pointed end of the needle In the magnetic compass point?
Answer:  In the magnetic compass, the pointed end of the needle always points in the north-south direction.

Question 13. When the south pole of a magnet comes in contact with the south pole of another magnet, then what happens?
Answer:  When the south pole of a magnet comes in contact with the south pole of the other magnet, then they repel each other because like poles always repel each other.

Question 14. Insert a magnetised needle through a paper cork. Let the cork float in the water placed in a tub in such a way that the cork does not touch the water. Does the needle always point in the same direction when the cork stops rotating?
Answer:  Yes, the needle always points in the same direction when the cork stops rotating.

Question 15. Mention a way to magnetise a magnetic material with a natural magnet.
Answer:  A magnetic material can be magnetised by rubbing in a particular direction.

Question 16. It was observed that a pencil sharpener gets attracted by both the poles of a magnet although its body is made of plastic. Name a material that might have been used to make some part of it.
Answer: A pencil sharpener contains a blade which is made up of iron, hence it gets attracted by both the poles of a magnet.

NCERT Class 6 Science Chapter 10 Fun With Magnets Fill In The Blanks

Question 1. A shepherd named _________________discovered the magnet.
Answer: Magnes

Question 2. Ball-ended magnet is an example of_________________magnet.
Answer: Artificial

Question 3._________________magnet is used in electric bell.
Answer: Horseshoe

Question 4. Artificial magnets have ________________shapes,
Answer: Different

Question 5. When a bar magnet is broken, each of the broken parts will have_________________pole/poles
Answer: North and south

Question 6. In a bar magnet, magnetic attraction ends.
Answer: Strong

Question 7. The south pole of Earth’s magnet is near the geographical_________________ pole.
Answer: North

Question 8. Like poles_________________ each other.
Answer: Repel

Question 9. A magnetic compass is used to find
Answer: Direction

Question 10. Hammering destroys the inside
Answer: Magnetic properties

Question 11. Magnet will lose its magnetic property, if _________________
Answer: Heated

Question 12. A freely suspended bar magnet always aligns in _________________
Answer: North-south direction

Question 13. Nickel is a_________________material.
Answer: Magnetic

Question 14. A bar magnet has the strongest magnetic field near the of the_________________ magnet
Answer: End

Question 15. Artificial magnets are made in different shapes such as____________and____________
Answer: A bar magnet, horseshoe magnet

Question 16. The materials which are attracted towards a magnet are called ____________
Answer: Magnetic materials

Question 17. Paper is not a____________material.
Answer: Magnetic

Question 18. In older days, sailors used to find direction by suspending a piece of ____________
Answer: A bar magnet

Question 19. A magnet always has ____________ poles
Answer: Two

NCERT Class 6 Science Chapter 10 Fun With Magnets True/False

State whether the following statements are true or false.

Question 1. A cylindrical magnet has only one pole.
Answer: False

Each magnet has two poles, i.e. north and south

Question 2. Artificial magnets were discovered in Greece.
Answer: False

Question 3. Similar poles of a magnet repel each other.
Answer: True

Question 4. Maximum iron filings stick in the middle of a bar magnet when it is brought near them.
Answer: False

Maximum iron filings stick up at the two ends of the magnet

Question 5. Bar magnets always point towards a north-south direction.
Answer: True

Question 6. A compass can be used to find the east-west direction at any place.
Answer: True

Question 7. Rubber is a magnetic material.
Answer: False

As rubber does not get attracted towards a magnet

Question 8. The first magnet was found in magnesia.
Answer: True

Question 9. Magnetite is an artificial magnet.
Answer: False

Question 10. The substances having the property of attracting iron are known as magnets.
Answer: True

Question 11. Lodostono Is o natural magnet.
Answer: True

Question 12. A freely suspended magnet always aligns In the north-south direction.
Answer: True

Question 13. Copper cannot be magnetised.
Answer: True

Question 14. Wooden material can be magnetised.
Answer: False

Question 15. Heating cannot destroy the magnetic properties of a magnet
Answer: False

Question 16. A bar magnet is a natural magnet.
Answer: False

Question 17. A permanent magnet is a device that retains a magnetic property without a power source.
Answer: True

Question 18. A magnetic field is a region around a magnet within which the force of magnetism acts.
Answer: True

NCERT Class 6 Science Chapter 10 Fun With Magnets Assertion-Reason Questions

The following questions consist of two statements-Assertlon (A) and Reason (R). Answer these questions by selecting the appropriate option given below

1. Both A and R are true and R is the correct explanation of A.
2. Both A and R are true, but R is not the correct explanation of A.
3. A is true but R is false.
4. A is false but R is true.

Question 1.

Assertion (A): A magnet has two poles.

Reason (R): Iron filings are highly attracted towards the poles of a magnet.

Answer: 2. Both A and R are true, but R is not the correct explanation of A.

A magnet consists of two poles i.e., the north pole and the south pole and on the poles of a magnet, the magnetic strength is strong that’s why iron filings are highly attracted towards the poles of a magnet.

Question 2.

Assertion (A): Magnets should be kept at a distance from electronic devices.

Reason (R): Electronic devices have tiny magnets inside them and magnets kept near them can damage their working

Answer: 1. Both A and R are true and R is the correct explanation of A.

Electronic devices have small magnets inside them. When an external magnet is brought near to them, it can damage their working, that’s why magnets should kept at a distance from electronic devices.

Question 3.

Assertion (A): A freely suspended magnet always aligns in the N-S direction.

Reason (R): Like poles of two magnets are always attracted towards each other.

Answer: 3. A is true but R is false.

1. Magnet has some properties
2. Unlike poles attract each other.
3. Like poles repel each other.
4. A freely suspended magnet always aligns in the N-S direction.

Question 4.

Assertion (A): A horse-shoe magnet attracts more iron filings at its poles.

Reason (R): The magnetic strength of the horse-shoe magnet is maximum at its poles.

Answer: 1. Both A and R are true and R is the correct explanation of A.

Question 5.

Assertion (A): The unknown poles of a bar magnet can be determined by suspending it freely with the help of a string.

Reason (R): A freely suspended bar magnet always comes to rest in the east-west direction.

Answer: 3. A is true but R is false.

NCERT Class 6 Science Chapter 10 Fun With Magnets Match The Columns

Question 1. Match the Column 1 with Column 2

Answers: 1- D, 2-C, 3-A, 4-B

Question 2. Match the Column 1 and Column 2

Answers: 1- C, 2-A, 3-B, 4-D

Question 3.  A magnet was brought from different directions towards a toy boat that has been floating in water in a tub. The effect observed in each case is stated in Column 1. Possible reasons for the observed effects are mentioned in Column 2. Match the statements given in Column 1 with those in Column 2

Answer: 1- D, 2- E, 3- 2, 4- A, 5- C

Fun With Magnets Multiple Choice Questions

Question 1. Plastic comb

1. Iron clip
2. Paper notebook
3. Silver cup

Answer: 2. Iron clip

Question 2. Which among the following in the given options is an example of a magnetic substance?

1. Cobalt
2. Nickel
3. Iron
4. All of these

Answer: 4. All of these

Question 3. A mixture contains sand and iron dust. How can the iron dust be separated from sand?

1. Blow air over the mixture
2. Sieve the mixture using a strainer
3. Pour water in the mixture and then filter it
4. Spread the mixture and run a magnet all over it

Answer: 4. Spread the mixture and run a magnet all over it

Read and Learn More NCERT Class 6 Science MCQs

Question 4. The north pole of a magnet can be identified by

1. Another magnet has its poles marked as the north pole and south pole
2. Another magnet no matter whether the poles’ are marked or not
3. Using an iron bar
4. Using iron filings 10.

Answer: 1. Another magnet having its poles marked as the north pole and south pole

Question 5. A bar magnet is immersed in a heap of iron filings and pulled out. The amount of iron filings clinging to

1. The North Pole is almost equal to the South Pole
2. The North Pole is much less than the South Pole
3. The South Pole is much less than the North Pole
4. The magnet will be the same all along its length

Answer: 1. The North Pole is almost equal to the South Pole

Question 6. Three magnets A, B and C were dipped one by one in a heap of iron filings. The number of iron filings sticking to them

The strength of these magnets will be NCERT Exemplar

1. A>B>C
2. A < B < C
3. A < B > C
4. A=B = C

Answer: 1. A>B>C

Question 7. A freely suspended magnet always points in the

1. Upside down
2. East-west direction
3. North-south direction
4. Any direction by chance

Answer: 3. North-south direction

Question 8. Which of these will convert an iron rod into a

1. Bury the iron rod in the soil for a week.
2. Hit the iron rod with a hammer ten times.
3. Place the iron rod in a stack of iron bars for a month.
4. Rub the iron rod against a permanent magnet fifty times.

Answer: 4. Rub the iron rod against a permanent magnet fifty times.

Question 9. Attraction is seen between the poles of two bar magnets in the case of

1. The north pole of one magnet with the north pole of the other
2. The south pole of one magnet with the south pole of the other
3. The north pole of one magnet with the south pole of the other
4. All of the above

Answer: 3. The North pole of one magnet with the south pole of the other

Question 10. 

Which pair of cars will repel each other?

1. Pair 4 only
2. Pair 3 only
3. Both pair 1 and pair 3
4. Both pair 2 and pair

Answer: 3. Both pair 1 and pair 3

Question 11. Which of the arrangements It boot for storing n pair of bar magnets?

Answer: 3.

The magnetic properties can be destroyed by

1. Hammering
2. Heating
3. None of these
4. Both (1) and (2)

Answer: 3. None of these

Question 12. Atul Is an Intelligent boy. One day his mother gifted ‘ him a bar magnet. He starts playing with It. He also starts exploring various properties of magnets. His friend tells him that there are many other shapes and types of magnets like cylindrical magnets, horse-shoe magnets, etc. He finds that magnets are used in electrical appliances, compasses and even in making toys. One day his father tells him to keep this bar magnet safely. If a magnet is hammered, heated and struck against a hard substance, it loses its magnetic property.

1. _________________is an artificial magnet.

1. Horseshoe magnet
2. Magnetite
3. Ball-ended magnet
4. Both (1) and (3)

Answer: 4. Both (1) and (3)

2. A magnet loses its property when

1. Hammered
2. Heated
3. Improperly stored
4. All of these

Answer: 4. All of these

3. Which of the following is a magnetic material?

1. Silver
2. Stainless steel
3. Cobalt
4. Leather

Answer: 3. Cobalt

4. Lodestone is a ___________

1. Natural
2. Man-made
3. Both (1) and (2)
4. None of these

Answer: 1. Natural

Question 13. The poles that attract each other are

1. North-south
2. South-south
3. South-north
4. Both (1) and (3)

Answer: 4. Both (1) and (3)

Question 14. A freely suspended magnet comes to rest in the

1. East-west direction
2. North-east direction
3. South-west direction
4. None of the above

Answer: 4. None of the above

Question 15. The magnetic strength of a magnet is strong at

1. The north pole
2. The south pole
3. The centre of the magnet
4. Both (1) and (2)

Answer: 4. Both (1) and (2)

Question 16.  Which of the following is a magnetic material?

1. Iron
2. Plastic
3. Glass
4. None of these

Answer: 1. Iron

Air Around Us Multiple Choice Questions

Question 1. Which of the following statements is incorrect?

1. All living tilings require air to breathe
2. We can feel the air, but we cannot see it
3. Moving air makes it possible to fly a kite
4. Air is present everywhere, but not in the soil

Answer: 4. Air is present everywhere, but not in soil

Question 2. Wind does not help in the movement of which of the following?

1. Firki
2. Weather cock
3. Ceiling fan
4. Sailing Yacht

Answer: 3. Ceiling fan

Read and Learn More NCERT Class 6 Science MCQs

Question 3. Boojho took an empty plastic bottle, turned it upside down and dipped its open mouth into a bucket filled with water. He then tilted the bottle slightly and made the following observations.

1. Bubbles of air came out from the bottle.
2. Some water entered into the bottle.
3. Nitrogen gas came out in the form of bubbles and oxygen gas dissolved in water.
4. No bubbles formed, only water entered into the bottle.

Which observation(s) is/are correct?

1. 1 Only 2
2. Only 4
3. 3 Only 4
4. Only 1

Answer: 1. 1 Only 2

Question 4. Mountaineers carry oxygen cylinders with them because

1. There is no oxygen in high mountains
2. Oxygen is deficient in mountains at higher altitude
3. Oxygen is used for cooking
4. Oxygen keeps them warm at low temperature

Answer: 2. There is a deficiency of oxygen in mountains at higher altitude

Question 5. What is the function of the atmosphere?

1. It protects us from smoke and dust particles
2. It reduces the greenhouse effect
3. It filters air
4. It protects us from harmful radiation

Answer: 4. It protects us from harmful radiation

Question 6. The envelope of air that surrounds the Earth is the atmosphere ecosystem

1. Biosphere
2. Atmosphere
3. Environment
4. Ecosystem

Answer: 2. Atmosphere

Question 7. Which of the following components of air is present in the largest amount in the atmosphere?

1. Nitrogen
2. Oxygen
3. Water vapour
4. Carbon dioxide

Answer: 3. Water vapour

Question 8. About one-fifth of ordinary air is

1. Nitrogen
2. Carbon dioxide
3. Water vapour
4. Oxygen

Answer: 4. Oxygen

Question 9. The incorrect statement is

1. Air is a mixture of gases
2. The composition of oxygen in the air is maximum.
3. The envelope of air that surrounds the Earth is the
4. Aquatic plants and animals use dissolved oxygen in the water

Answer: 2. The composition of oxygen in the air is maximum.

Question 10. Burning of fuels produces

1. Oxygen
2. Carbon dioxide
3. Dust
4. Smoke

Answer: 2. Carbon dioxide

Question 11. Which of the statements about air is true?

1. Air can only be felt
2. Air occupies space
3. Air contains nitrogen, oxygen and CO₂
4. All of the above

Answer: 4. All of the above

Question 12. The components of air which are harmful to living beings are

1. Nitrogen and carbon dioxide
2. Dust and water vapour
3. Dust and smoke
4. Smoke and water vapour

Answer: 3. Dust and smoke

Question 13. Usha took a lump of dry soil in a glass and added water to it till it was completely immersed. She observed bubbles coming out. The bubbles contain

1. Water vapour
2. Only oxygen gas
3. Air
4. Only nitrogen gas

Answer: 3. Air

Question 14. What is not true about air?

1. It makes the windmill rotate
2. It helps in the movement of aeroplanes
3. Birds can fly due to the presence of air
4. It has no role in the water cycle

Answer: 4. It has no role in the water cycle

Question 15. Roja blows air through a straw Into a glass of water. Answers She sees bubbles coming out from the straw In the water. What does this show?

1. Air has mass
2. Air takes up space
3. Air can exert pressure
4. Air contains water vapour

Answer: 2. Air takes up space

Question 16. The component of air that is used by green plants to make their food is

1. Oxygen
2. Dust particles
3. Carbon dioxide
4. Nitrogen

Answer:  3. Carbon dioxide

Question 17. Name the gas required for breathing.

1. Nitrogen
2. Oxygen
3. Water vapour
4. Carbon dioxide

Answer: 2. Oxygen

Question 18. If there were no water vapour in the atmosphere, what would get disrupted?

1. Nitrogen cycle
2. Photosynthesis
3. Water cycle
4. Oxygen cycle

Answer: 1. Nitrogen cycle

Question 19. Oxygen is a supporter of

1. Combustion
2. Nitrogen
3. Smoke
4. Dust

Answer: 1. Combustion

Question 20. As you go higher, the atmosphere

1. Gets thicker
2. Gets thinner
3. Remains the same
4. Gets dusty

Answer: 2. Gets thinner

Question 21. Sumit wants to find out if burning takes place only in the presence of air. He places a burning candle inside each of the four inverted glasses

1. Inside which glass will the candle stop burning last?

1. Glass 1
2. Glass 2
3. Glass 3
4. Glass 4

Answer: 3. Glass 3

2. Which of these shows that air contains water vapour?

1. Steam is produced when water Is heated
2. Road surfaces shine on hot summer days
3. Dew appears on plant leaves on winter nights
4. Tiny particles shine in a narrow beam of sunlight

Answer: 3. Dew appears on plant leaves on winter nights

Question 22. See the following image and answer the questions given below.

Answer:

1. The component required to carry vapours into the upper atmosphere is

1. Nitrogen
2. Dust
3. Sunlight
4. Air

Answer: 4. Air

2. The process shown in the image is called

1. Oxygen cycle
2. Air cycle
3. Water cycle
4. Environmental cycle

Answer: 3. Water cycle

Question 23. Rohan performed an activity as follows

He put a burning candle inside an inverted glass A in a jar B full of water. The water rose in glass A after the candle was extinguished. He then, tried the same activity with a taller glass B. Answer the following questions regarding the observation

1. Water will rise

1. To equal levels in both glasses
2. Higher in glass A than in glass B
3. Higher in glass B than in glass A
4. Will not rise in glass B

Answer: 3. Higher in glass B than in glass A

2. The activity shows that

1. There are many components in air
2. Air does not support burning
3. Some components of air are fixed in quantity
4. Air has pressure

Answer: 3. Some components of air are fixed in quantity

Question 24. The picture shows trekkers at four different locations on a mountain.  The picture shows trekkers at four different locations on a mountain

At which location will a trekker need maximum oxygen from the cylinder?

1. P
2. Q
3. R
4. S

Answer: 4. S

Question 25. Wearing a face mask prevents germs present in the air from entering our bodies. What is another benefit of wearing a face mask?

1. It prevents the drying of lips
2. It helps to reduce bad breath
3. It helps to keep the face warm
4. It prevents dust from entering the body

Answer:  4. It prevents dust from entering the body

Question 26. Which is the largest component of air?

1. Oxygen
2. Nitrogen
3. Water vapour
4. Carbon dioxide

Answer: 2. Nitrogen

NCERT Class 6 Science Chapter 11 Air Around Us Long Question And Answers

Question 1. How will you show that air is dissolved in water?
Answer:

Take some water in a glass vessel or beaker. Heat it slowly on a tripod stand well before the water begins to boil. Look carefully at the inner surface ofthe vessel, you will see tiny bubbles inside. These bubbles come from the air dissolved in water

Question 2. Observe the figure given below depicting the distribution of some components present In air and answer the following questions:

Read and Learn More Class 6 Science Question And Answers

1. Identify all the components.
2. What purpose is served by the component
3. Do the values or percentages of these components vary?

Answer:

1.

1. Nitrogen  – 78%
2. Oxygen – 21%
3. CO₂, water vapour-  0.03%
4. Other gases and dust particles – 1%

2. The component is oxygen. It is used by humans and animals for respiration. It also helps in combustion/ burning.

3. Yes, the composition ofair is not always the same. It changes slightly from place to place.

Question 3. Explain the following observations briefly.

1. A firkin does not rotate in a closed area
2. The arrow of weather cock points towards a particular direction at a particular moment
3. An empty glass Is not empty
4. Breathing through the mouth may harm you

Answer:

• Motion offers are based on the pressure/force applied by air on the blades of the first. A firkin does not rotate in a closed area because of a lack of air movement.
• The arrow of the weather cock points towards a particular direction as it shows the direction in which the air is moving at that place at a particular moment.
• An empty glass in feet is not empty. It is filled with air. Which is present everywhere.
• Breathing through the mouth may harm us because we may inhale dust,f present in the air which is harmful

Question 4. Pahell kept some water In a beaker for heating. She observed that tiny bubbles appeared before the water started to boil. She boiled the water for about 5 min filled It In a bottle upto the brim and kept the bottle airtight till cooled down to room temperature.

1. Why did the tiny bubbles appear?
2. Do you think tiny bubbles will appear on heating the water taken out from the bottle? Justify your

Answer:

1. Air is dissolved in water in the form of oxygen. Tiny bubbles appear when air present in the water escapes from boiling it.
2. No, tiny bubbles will not appear again as there is no dissolved air in this water after boiling.

Question 5. Explain what makes the carbon dioxide gas present in the air necessary for all in the atmosphere.
Answer:

The presence of small amount of carbon dioxide gas in the atmosphere is essential for the growth and existence of living beings.

• The desirable proportion of carbon dioxide in the atmosphere is 0.03%.
• The importance of carbon dioxide in the atmosphere is as follows
• It leads to the heating of the Earth and its atmosphere which is essential for our survival
• It takes part in the photosynthesis process carried out by green plants to prepare their food

Question 6. Write a few sentences for an imaginary situation if any of the following gases disappear from the atmosphere.

1. Oxygen
2. Nitrogen
3. Carbon dioxide

Answer:

1. There will be no life on the Earth. Oxygen is vital for life. It helps in burning, respiration, photosynthesis, etc. Oxygen is a basic need of all living beings.
2. Nitrogen is utilised by plants for their growth and development in the absence of nitrogen no plants will survive and hence, no life is possible on Earth.
3. Carbon dioxide is needed for photosynthesis which occurs in green plants. In its absence, plants will not be able to prepare their food and hence, there will be no life on the Earth.

Question 7. Humans and animals use oxygen for respiration and plants require carbon dioxide for photosynthesis. How are these two processes related?
Answer:

• Humans and animals use oxygen present in the environment to carry out respiration and release CO₂ as a byproduct of this process.
• Plants perform photosynthesis by using this CO₂  present in the atmosphere accumulated due to the activities of humans and animals. They release oxygen as a byproduct which also gets out in the atmosphere.
• Plants depend on humans and the activities performed by them like burning of fuels, etc. for CO₂ and humans depend on plants for a continuous oxygen supply. Thus, these two processes maintain a unique balance between O₂ and CO₂  concentration in our environment

Question 8. Which of these actions can cause air pollution? Circle ‘Yes’ or ‘No’ for the correct response

Answer: 

1. No
2. Yes
3. No

Question 9. Observe the given figure and answer the following question?

1. What Is covering the nose and mouth of the policeman?
2. Why is he putting a cover on his nose?
3. Can you comment on the air quality of the place as shown in the figure

Answer:

1. The mask covers the nose and mouth of the policeman.
2.  The policeman is putting a cover on his nose to himself from dirt/polluted air produced by vehicles on the road.
3. The air quality of the place is not good. It is due to the smoke and gases emitted by the automobiles along with dust particles present in the air

NCERT Class 6 Science Chapter 11 Air Around Us Short Question And Answers

Question 1. What should Sumit keep the same for the activity? Circle ‘Yes’ or ‘No’ for the correct response.

Answer:

1. Yes
2. No

Question 2. Make sentences using the given set of words.

1. 99%, oxygen, nitrogen, and air, together
2. Respiration, dissolved, animals, air, aquatic
3. Air, wind, motion, called

Answer:

The correct sentences are:

1. Oxygen and nitrogen together make up 99% ofthe air.
2. Aquatic animals use dissolved air for respiration.
3. Air in motion is called wind.

Question 3. Ravi fills a steel vessel with water and starts heating it in an oven. He notices small bubbles at the bottom of the vessel after some time.

Question 4. Identify the major components of air present in the

1. Inhaled air
2. Exhaled air

Answer:

1. Oxygen
2. Carbon dioxide

Question 5. How does air play an important role in the water cycle?
Answer:

1. The water vapour from lakes and sea after evaporation is carried into the atmosphere by air.
2. Here, it gets condensed and finally falls back on Earth as a ram. And this cycle continues.

Question 6. Why does a lump of cotton wool shrink in water?
Answer:

• Lump of cotton wool has air among gaps of cotton fibres.
• When dipped in water, air from these gaps is replaced by water.
• The cotton lump becomes heavy and also shrinks due to the removal of air gaps.

Question 7. Why do mountaineers carry oxygen cylinders while climbing high mountains?
Answer:

• As we go higher in the atmosphere, the air gets rarer, consequently, oxygen is also reduced.
• This is why oxygen cylinders are carried by mountaineers, to be able to breathe in a lack of oxygen.

Question 8. The transparent glass of windows appers hazy if not wiped why? 
Answer:

• Dust particles sit on the surface ofthe glass windows.
• Other components in the air such as moisture (water vapours) also get collected and the window appears hazy.

Question 9.  How do plants and animals help each other in the exchange of gases in the atmosphere?
Answer:

• There is an interdependence of plants and animals on each other for the exchange of gases.
• Plants take carbon dioxide and give out oxygen to the atmosphere.
• Animals inhale this oxygen and give out carbon dioxide to the atmosphere.
• Therefore, plants and animals help each other in the exchange of gases in the atmosphere.

Question 10. Air takes the shape, smell, etc. of the object/ place it is present in. Explain?
Answer:

1. Air does not have a fixed shape or size of its own because it is a gaseous mixture whose particles are very loose, thus not able to form a fixed shape
2. If air is blown in a balloon of a round shape, it takes its shape. Similarly, air can be enclosed in packets of chips different in shape and size.
3. Like water, air also has no smell. It carries the odour of whatever is present in the surroundings. We can smell a nice perfume or a bad smell because air carries the smell.

Question 11. When an empty glass bottle is inverted and inserted into a trough filled with water, water does not enter the bottle. Specify.
Answer:

Water does not enter into an inverted glass bottle because even when the bottle appears empty, it’s not. Air is present inside the bottle or any other area which is empty.

All the space in the bottle is occupied by air. This air prevents the water from entering inside the bottle. As we tilt the bottle, air present inside moves out. As air comes out, the space becomes empty allowing the entry of water. The space vacated by leaving ofair is then occupied by water.

Question 12. During any fire incident, it is advised to

1. Wrap a towel or woollen blanket over the burning object.
2. Use a fire extinguisher to stop the fire.

Why are these methods advised? Give reasons.
Answer:

• Fire or burning is supported by oxygen. To stop it, The towel or woollen blanket used cuts off the supply of oxygen, which supports burning. As this supply is cut out, the fire eventually stops.
• A fire extinguisher contains carbon dioxide gas, which does not support burning. So, when a fire extinguisher is used over the area, CO₂ cuts off the oxygen supply from the air causing the fire to be extinguished

Question 13. Garima observed that when she left her tightly capped bottle full of water In the open sunlight, tiny bubbles formed all around inside the bottle. Help Garima to know why It so happened. 

Air is dissolved in water in the form of oxygen. When a water bottle is left in the open sunlight, tiny bubbles form all around inside the bottle because air dissolved in water starts escaping in the form of tiny bubbles due to heat from the Sun.

Question 14. On a Sunday morning, Paheli’s friend visited her home. She wanted to see some flowering plants in the nearby garden. Both of them went to the garden. While returning from the garden, they also observed some flowering plants on the roadside. But to their surprise, they found that the leaves and flowers of these roadside plants were comparatively very dull. Can you help them to know why?
Answer:

The leaves and flowers of the roadside plants are very dull because the air along the roadside is polluted with air pollutants due to emissions of harmful gases and dust particles from vehicles and industries, etc. Thus, the roadside plants had probably some dust and soot deposited on them. This made them appear dull

Question 15. Why is it safer to breathe through the nose than through the mouth?
Answer:

1. Fine hair and mucus are present in our nostrils.
2. They prevent the dust particles from entering the respiratory system.
3. Hence, it is safer to breathe through the nose than through the mouth.

 

NCERT Class 6 Science Chapter 11 Air Around Us Very Short Questions and Answers

Question 1. What do you have in your fist when you close it?
Answer:  Though we might think, there is nothing, when we close our fists, air gets trapped in the spaces between our fingers.

Question 2. What kind of a mixture is air?
Answer:  Air is a mixture of many gases. The major components ofair are gases like oxygen, nitrogen, etc water vapour and dust

Question 3. Why does a policeman wear a mask, while regulating traffic?
Answer: There are so many dust particles in the air in crowded traffic. A mask protects the respiratory system ofthe policemen

Question 4. Why during an accident or fire, one is advised to wrap a woollen blanket over a burning object?
Answer: By wrapping the object with the woollen blanket, the oxygen supply is cut off and the fire gets extinguished.

Question 5. Will the tiny air bubbles seen before water boil, also appear if we do this activity by reheating boiled water kept in an airtight bottle? 
Answer: If boiled water kept in an airtight container is reheated, the bubbles do not appear again as dissolved air is already escaped while heating before.

Question 6. We say that air Is present everywhere. Have you ever seen it? what makes you say so?
Answer: No. air cannot be seen, but it can be felt during wind, fluttering ofleaves, etc.

Question 7. A place where no air is present will be called what? Give example.
Answer: A place without air is called a vacuum,

Example:  Space.

Question 8. Oxygen occupies how many parts of the air?
Answer: Oxygen occupies about l/5th part ofthe air.

Question 9. Oxygen and nitrogen form 99% of the air. Rest 1% is constituted by which components?
Answer:  1% of air includes carbon dioxide (CO₂), water vapours, helium, hydrogen, dust particles and smoke.

Question 10. Do you know the reason why mountaineers carry oxygen cylinders with them?
Answer:  As we go up above the sea level, oxygen decreases at higher altitudes which causes breathing problems. So mountaineers carry oxygen cylinders with them.

Question 11. Is air necessary for burning? Give a reason for your answer.
Answer: Yes. because oxygen present in the air supports burning.

Question 12. Gases are present in certain ratios in the air. Can you tell the relative proportions of nitrogen and oxygen in the air?
Answer:  Nitrogen and oxygen are present in the ratio of 4:1 by volume in air.

Question 13. Name the major part of air that does not support burning.
Answer:  Nitrogen is the major part of the air which does not support burning.

Question 14. Name the sources of carbon dioxide in the air.
Answer:  Respiration by animals and plants and the burning of fuel etc. are the sources of carbon dioxide.

Question 15. During rainfall, the spaces between soil particles are filled with water. How do the organisms of soil breathe?
Answer:  Organisms present in soil come out of their holes and burrows for breathing.

Question 16. Give a reason why factories have tall chimneys.
Answer: Tall chimneys take the smoke produced by factories high up in the air to reduce harmful effects on the ground.

Question 17. In many musical instruments, air plays an important role. Can you name such instruments?r
Answer: Air plays an important role in several musical instruments such as the flute, trumpet, harmonium, etc.

Question 18. Traffic policemen use the masks for which reason?
Answer: To prevent inhalation of smoke given out by automobiles, traffic policemen use masks

Question 19. Which gas in the atmosphere is essential for respiration?
Answer: Oxygen is essential for respiration.

Question 20. The layer of air around the Earth is known as
Answer: Atmosphere

Question 21.  The component of air used by green plants to make their food is
Answer: Carbon dioxide

Question 22.  Where do the bubbles come from?
Answer: Air is dissolved in water. When water is heated, the air escapes. Hence, the bubbles form

NCERT Class 6 Science Chapter 11 Air Around Us Fill In The Blanks

Question 1. As we move higher in the atmosphere, the air gets ________________
Answer: Rarer

Question 2. Aquatic animals use dissolved ________________ in water for respiration
Answer: Oxygen
.
Question 3. The component of air used by green plants to make their food is________________
Answer:  Carbon dioxide

Question 4.________________in factories take the harmful smoke and gases away from our noses.
Answer: Chimneys

Question 5. Windmills are used to generate ________________
Answer: Electricity

Question 6. The________________ particles can be seen moving in a beam of sunlight in a dark room.
Answer: Dust

Question 7. The envelope of air that surrounds the Earth is called ________________
Answer: Atmosphere

Question 8. The presence of ________________in air is important for the water cycle in nature
Answer: Water vapours

NCERT Class 6 Science Chapter 11 Air Around Us True/False

Question 1. Air helps in the movements of sailing yachts and gliders, but plays no role in the flight of birds and aeroplanes
Answer: False

Air also helps in the (light of birds and aeroplanes

Question 2. The composition of air is always the same.
Answer: False

The composition ofair is not always the same.

Question 3. Respiration can occur only in the presence of nitrogen
Answer: False

Nitrogen has no role in the process of respiration

Question 4. Nitrogen present in the air supports the process of burning.
Answer: False

Nitrogen does not support the process of burning

Question 5. Green plants need carbon dioxide gas to make food.
Answer: True

Question 6. Plants produce oxygen during the process of making their food.
Answer: True

Question 7. Aquatic animals and plants use dissolved nitrogen to survive in water.
Answer: False

Question 8. The amount of air increases as we go up.
Answer: False

Question 9. CO₂ is important for green plants.
Answer: True

NCERT Class 6 Science Chapter 11 Air Around Us Assertion-Reason Questions

The following questions consist of two statements. Assertion and Reason (R). Answer these question by selecting the appropriate option given below

1. Both A and R are true and R is the correct explanation of A
2. Both A and R are true, but R is not the correct explanation of A
3. A is true, but R is false
4. A is false, but R is true

Question 1.

Assertion (A): Carbon dioxide and oxygen are involved in respiration.

Reason (R): The plants and animals consume carbon dioxide and oxygen respectively 

Answer: 1. Both A and R are true and R is the correct explanation of A

Question 2.

Assertion (A): We feel comfortable on a windy day.

Reason (R): Wind is caused by the movement of air.

Answer: 2. Both A and R are true, but R is not the correct explanation of A

Both A and R are true, but R is not the correct. explanation of A. The correct explanation is that The movement ofair causes wind, but it does not explain why we feel comfortable on a windy day. We feel comfortable because the moving air helps in the evaporation of sweat from our body thereby giving us a cooling effect

Question 3.

Assertion (A):  Plants release carbon dioxide into the atmosphere.

Reason (R):  Plants make their food by the process of photosynthesis.

Answer: 4. A is false, but R is true

A is false, but R is true. This can be corrected as Plants release oxygen into the atmosphere and they consume carbon dioxide during photosynthesis.

Question 4.

Assertion (A):  Tire pressure of air decreases with height.

Reason (R):  Tire amount of air decreases as we go up

Answer: 1. Both A and R are true and R is the correct explanation of A

Question 5.

Assertion (A): Plants can absorb nitrogen in the form of nitrates.

Reason (R): Plants cannot use nitrogen directly from air.

Answer: 1. Both A and R are true and R is the correct explanation of A

Question 6.

Assertion (A): Bubbles form when soil is added to water.

Reason (R):  Air is dissolved in soil

Answer: 1. Both A and R are true and R is the correct explanation of A

NCERT Class 6 Science Chapter 11 Air Around Us Match The Columns

Question 1. Match the Column 1 with Column 2

Answer: 1-D, 2- C, 3- E, 4- A, 5- B

Question 2. Match the Column 1 with Column 2

Answer: 1-D, 2- E, 3- A, 4- B, 5- C

Question 3. Match the Column 1 with Column 2

Answer: 1-E, 2- D, 3- A, 4- B, 5- C

NCERT Class 6 Science Chapter 7 Motion And Measurement Of Distances Long Question And Answers

Question 1. Arrange the following lengths in their increasing magnitude 1 metre, 1 centimetre, 1 kilometre, 1 millimetre
Answer:

We know that,

1 kilometre (km) = 1000 metre (m)

1 metre (m) = 100 centimetre (cm)

1 centimetre (cm) = 10 millimetre (mm)

Hence, the increasing order of given units is as follows 1 millimetre <1 centimetre <1 metre <1 kilometre

Question 2. The height of a person is 1.65 m. Express it Into cm and mm.
Answer:

Given, the height of a person = 1.65 m

We know that,

1 metre (m)= 100 centimetre (cm)

1 metre (m)- 1000 millimetre (mm)

The height of a person in cm

= 1.65 × 100 cm = 165 cm

Read and Learn More Class 6 Science Question And Answers

The height of a person in mm

= 1.65 × 1000 mm = 1650 mm

Question 3. The distance between Radha’s home and her school is 3250 m. Express this distance into km.
Answer:

Given, the distance between Radha’s home and her school = 3250 m

We know that,

1 km = 1000 machine

1 m = \(\frac{1}{1000}\) km

Now, the distance between Radha’s home and her school in km

3250 × \(\frac{1}{1000}\)

= \(\frac{3250}{1000}\)

= 3.25 km

Question 4. While measuring the length of a knitting needle, the reading of the scale at one end is 3 cm and at the other end is 33.1 cm. What is the length of the needle?
Answer:

Accurate scale reading begins from zero as shown below

But here the reading on the scale begins with 3 cm

Thus, the error in the scale

= 3 cm- 0 cm = 3 cm

Now, the other end on the scale reads = 33.1 cm

Thus, the actual length of the needle = (Reading on the other end Error reading of the first end)

= 33.1 cm – 3 cm = 30.1 cm

Question 5. Write the similarities and differences between the motion of a bicycle and a ceiling fan that has been switched ON.
Ans.

Similarities are given below

• The wheels of a bicycle and a ceding fan execute a rotational motion on a fixed axis.
• The particles of both exhibit circular motion except the particles at the centre.
• Differences are given below
• A bicycle changes its position while exhibiting circular motion but a ceiling fan does not change its position.
• Bicycles can execute rectilinear motion with translational motion but ceiling fan do not execute rectilinear motion.

Question 6. It is not accurate to measure a length with elastic tapes. Explain why?
Answer:

Elastic tapes are stretchable and their length can be increased during the measurement if it is not handled with care. Therefore, the measurement done by elastic tapes may be greater than the actual length of the object. So, we can say that elastic tapes are not accurate for measuring a length.

Question 7. Three students measured the length of a corridor and reported their measurements. The values of their measurements were different. What could be the reason for the difference in their measurements? (Mention any three)
Answer:

The reasons may be as follows:

• Their scales of measurement may not be standard or they may be using different scales of measurement.
• The length of the scale may not be proper, i.e. the length of the scale may be shorter than the length they want to measure.
• There may be some errors in the scale which they are using or they may not be using the correct method of observing the scale.

Question 8. While travelling in a train, it appears that the trees near the track are moving whereas co-passengers appear to be stationary. Explain the reason.
Answer:

While travelling, trees near the track seem to be moving back (i.e. opposite to the direction of motion of a train) because there is a relative motion between outside trees and the moving train. In the case of co-passengers, the relative motion between us and co-passengers is zero, so they appear to be stationary.

Question 9. The blades of a moving electric fan are different in the following ways:
Answer:

Question 10. Boojho was riding his bicycle along a straight road. He classified the motion of various parts of the bicycle as

1. Rectilinear motion
2. Circular motion and
3. Both rectilinear as well as circular motion.

 Can you list one part of the bicycle for each type of motion? Support your answer with a reason:

1. Rectilinear motion:  Rectilinear motion The handle of a bicycle will always move in a rectilinear path because it cannot do circular or rotatory motion.
2. Circular motion: Circular motion The paddles of the bicycle will always move circularly around its chain fixing system because it cannot move in a forward direction without the whole chain system
3. Both rectilinear and circular: Both rectilinear and circular The wheels of the bicycle will move in rectilinear as well as in circular motion because the wheel as a whole will move forward and its point or particles around the rim will execute circular motion

Question 11. A student measures the length of his classroom four times using a stick

Based on the above observation, answer the following questions.

1. Which measurement is likely to be wrong?

1. 1 st time
2. 2nd time
3. 3rd time
4. 4th time

Answer: 3. 3rd time

2. Anil and his friend measured the length of the same classroom using their feet. Will their measurements be the same? Explain your answer.
Answer:

Their measurement will be different because the length of their feet may be different.

3. Which of these is a standard unit of length?

1. Leg
2. Stick
3. Hand
4. Metre

Answer: 4.  Metre

Question 12. Identify the different types of motion in the following word diagram.

Answer:

Different types of motion are represented in word diagrams are

1. Rectilinear motion
2. Circular motion
3. Periodic motion
4. Lanotator

Question 13. Which type of motion does the rotation of the minute arm involve? Choose Yes or No for the correct response.

Answer: 

1.  No

2.  No

3. Yes

4. Yes

Question 14. Which of these could Jenny use to measure her son’s __________________ height? Choose Yes or No for the correct Competency response.

Answer:

1. Yes

2. No

3. Yes

Question 15. Four children measured the length of a table which was about 2 m. Each of them used different ways to measure it.

Which one of them would get the most accurate length? Give reasons for your answer.

1. Shyam measured it with a half-metre-long thread.
2. Gurmeet measured it with a 15 cm scale from her geometry box.
3. Reena measured it using her handspan.
4. Salim measured it using a 5 m-long measuring tape.

Answer: 4. Salim measured it using a 5 m-long measuring tape.

• Salim will measure it most accurately for the following reasons
• The length 2 m which he wants to measure can be measured using this scale only in a single attempt.
• This scale is the standard scale and will measure the correct measurements.
• Other scales given are either non-standard or have a length less than the length we want to measure.

NCERT Class 6 Science Chapter 7 Motion And Measurement Of Distances Short Question And Answers

Question 1. Are all the measurements for the room and table using everybody’s foot and handspan respectively, equal? 
Answer:

The measurement of a room and table using the foot and handspan of different persons will not be equal. This is because the footsteps and handspan of every person are not the same so, their distance can vary.

Question 2.  Boojho is not sure why we say that the distance of the stone from your hand is the same when we whirl it around. Can you help him understand this? Remember that the stone is held with string. 
Answer:

Distance is actually defined as the length between two places. It is clear from the diagram that when we whirl the stone, the length between points A and B , i.e. between hand and stone does not change.

Hence, the distance is the same.

Question 3. Give two examples of each of the modes of transport used on land, water and air.
Ans.

There are mainly three main modes of transport which are given below

1. Land transports:  Those transports that run on land are called land transports,
   • Example: Bus and truck.
2. Water transports: Those transports that run on water are called water transports,
   • Example: Boat and ship.
3. Air transports: Those transports that run in the air are called air transports
   • Example: Aeroplanes and helicopters.

Question 4. Why can a pace or a footstep not be used as a standard unit of length?
Answer:

A pace or a footstep cannot be used as a standard unit of length because the length of a footstep, forearm length and handspan of different persons is different. Since standard units must be similar at all places of the world and in all kinds of conditions. It should not depend upon body parts and natural phenomena. So, footsteps and other such measuring systems cannot be used as a standard unit

Question 5. Why could you not use an elastic measuring tape to measure distance? What would be some of the problems you would meet in telling someone about a distance you measured with an elastic tape?
Answer:

Elastic substances have the property of elasticity, i.e. these can be stretched by applying some force. Therefore, an elastic measuring will not give an accurate measurement. In elastic tape measurement, the measurement of the same object may be different due to its stretching.

Question 6.  Give two examples of periodic motion.
Answer:

Two examples of periodic motions are

• The motion of the earth around the sun
• To and fro movement of the bob of a pendulum

Question 7. We need standard units of measurement for a quantity. Explain why?
Answer:

We need standard units of measurement because the units like handspan, foot, and cubit differ from person to person. So, for a uniform measurement, the standard unit of measurement is required.

Question 8. Can the length of the pipe be measured correctly with a ruler? Explain your answer

Answer:

The length of the pipe cannot be measured correctly because a ruler can measure the length of straight objects.

Question 9. Correct the following.

1. The motion of a swing is an example of rectilinear motion.
2. 1 m = 1000 cm
   

Answer:

1. The motion of a swing is an example of periodic motion.
2. 1 m = 100 cm

Question 10. Mamta Is measuring a piece of wood with a broken meter scale. Her friend Kanchan corrects her by measuring It from any full mark of meter scale.

1. State the values that Kanchan reflects here.
2. Give one correct way to measure

Answer:

1. Kanchan is intelligent, helpful and has good knowledge of the subjects,
2. One correct way to measure from a broken scale is to start with full marks.

Question 11. There was a quarrel between Ram and Shyam as the measured length of his school table was different from each other. Prlya came and said that calculation of length by Shyam Was more accurate and gave a simple explanation for It.

1. State the values that Priya reflects here.
2. Mention the cause for different measurements of Ram and Shyam.

Answer:

1. Priya is intelligent and has good knowledge upto class 6th
2. As length measured by Shyam is from measuring tape which is not elastic as of Ram, so they have different measurements.

Question 12. Describe in detail how the thickness of a thin wire can be determined.
Answer:

First of all, take a round pencil and try to wrap the given wire around the pencil making 25 turns forming a coil. Now, measure the length of the wire that turns the formed coil. Divide the total length of the coil by number of turns. This is the thickness of the wire

Question 13. The photograph given In the figure shows a section of a grille made up of straight and curved Iron bars. How would you measure the length of the bars of this section, so that the payment could be made to the contractor?

Answer:

To measure the length of the bars of the grille, the straight part of the iron bar is measured directly with measuring tape and the curved part is firstly measured with thread, then after measuring tape is used to measure the length of the thread.

Question 14. The picture shows the minute arm of a clock rotating

Question 15. A car is moving on a road. Suddenly, the driver applies the brakes and stops the car. What can you say about the two states of the car, i.e. when it is moving and when it stops?
Answer:

An object is said to be at rest when it does not change its position with time. If an object changes its position concerning time, it is said to be in motion.

Question 16. Can an object be in motion and rest simultaneously for different observers? Give an example and consequence.
Answer:

Yes, a person driving a car is at rest concerning another person who is sitting in the same car but he is in motion concerning a person standing roadside. The state of motion and rest depends upon the observer or reference point.

Question 17. Briefly explain the type of motion performed by the earth.
Answer:

The earth performs two types of motion. One of the motions is when it moves around the sun, then it is said to possess circular motion and on the other hand, it also rotates about its axis, called rotational motion.

 

NCERT Class 6 Science Chapter 7 Motion And Measurement Of Distances Very Short Question And Answers

Question 1. Are there any early modes of transport that are not in use today? „
Answer: Yes, for example, bullock cart, horse cart, camel cart, etc.

Question 2. Explain how people know how far they have travelled.
Answer: By measuring distance by a particular standard unit of measurement, we can measure how far they have travelled.

Question 3. What would you suggest Paheli and Boojho do, to measure the length of the whole desk? Page 76
Answer: They should use a small length of string instead of a cricket wicket and bails to measure the length of the desk.

Question 4. How can we use a string to measure distance less than the length of the string
Answer: By marking 1/2,1/4 and 1/8 of string length.

Question 5. How would you decide whether an object is in motion or at rest?
Answer: An object is said to be at rest when it does not change its position with time, while an object is said to be in motion when it changes its position with time

Question 6. Mention the two contributions in the 20th century towards transportation.
Answer: The two contributions in the 20th century towards transportation are electric trains and supersonic aeroplanes.

Question 7. Mention some modes of transportation of ancient times.
Answer: In ancient times, there were some modes of transportation like bullock carts, horse carts, camel carts, etc.

Question 8. Name one method of ancient times which is used to measure the length.
Answer: Handspan is one of the methods, which was used to measure the length in ancient times.

Question 9. Mention the name of the universally accepted system of measurement.
Answer: The system of international units is a universally accepted system of measurement.

Question 10. State how many kilometres are there in 1 metre.
Answer: There are \(\) kilometre in 1 metre

Question 11. Give the name of the device used to measure the girth of a tree.
Answer: The device which is used to measure the girth of a tree is a measuring tape.

Question 12. Name the motion exhibited by a freely falling stone.
Answer: The motion exhibited by a freely falling stone is rectilinear.

Question 13. Give the name of the motion possessed by the vehicles on a straight road.
Answer: Rectilinear motion is the motion possessed by vehicles on a straight road.

Question 14. State whether the hour hand of a wall clock is at rest or in motion.
Answer: Due to the changing position of the hand of a wall clock, it always is in motion.

Question 15. State an example of a rotational motion.
Answer: One example of rotational motion is the motion of the earth about its axis.

Question 16. Explain the term non-periodic motion.
Answer: Non-periodic motion is a motion which does not repeat in equal intervals of time.

Question 17. Name the type of motion possessed by the planet around the sun.
Answer: The motion possessed by the planets around the sun is circular motion.

Question 18. Give the name of the motion that a simple pendulum exhibits.
Answer: Periodic motion is exhibited by the simple pendulum.

Question 19. How are the motions of the wheel of a moving bicycle and a mark on the blade of a moving electric fan different? Explain.
Answer: The motions of the wheel of a moving bicycle and a mark on

NCERT Class 6 Science Chapter 7 Motion And Measurement Of Distances Fill In The Blanks

Question 1. One metre is  ___________cm.
Answer:  100

Question 2. Five kilometres is ______ m.
Answer:  5000 [v 1 km = 1000 m]

Question 3. The motion of a child on a swing is ________
Answer:  Periodic motion

Question 4. Motion of the needle of a sewing machine is ___________
Answer:  Periodic motion

Question 5. The motion of a wheel of a bicycle is ______
Answer:  Circular motion

Question 6. Different modes of ___________ are used to go from one place to another _____
Answer:  Transport

Question 7. The length of a curved line can be measured by using ___________
Answer: Thread or measuring tape

Question 8. The metric system for measurement was created by the ___________
Answer:  French

Question 9. The SI unit of length is ___________
Answer:  Metre

Question 10. 2000 cm is equal to ___________ metre
Answer:  20

Question 11. Motion is the change In ___________of in object.
Answer:  Position

Question 12. The motion of an object or a part of it around a fixed point is Known as ___________ motion.
Answer: Circular

Question 13. A body repeating its motion after a certain Interval of time is in ___________ motion
Answer: Periodic

Question 14. In rectilinear motion, the object moves ___________ a ___________ line
Answer: In, Straight

Question 15. A plucked string of a star executes ___________ motion.
Answer:  Oscillatory

Question 16. The motion that repeats itself after a regular interval of time is _____________________
Answer: Periodic motion

Question 17.  A stone falling from a height exhibits _______________________motion.
Answer: Rectilinear

Question 18. The length between the tip of the middle finger and the chin of an outstretched arm is ______________
Answer:  Yard

NCERT Class 6 Science Chapter 7 Motion And Measurement Of Distances True Or False

Question 1. An elastic tape cannot give a true measurement 
Answer: True

Question 2. A cloth merchant uses a meter rod to measure the length of the cloth. 
Answer: True

Question 3. From a broken meter scale, measurement can be done from a zero mark.
Answer: False

Question 4. One metre is equal to 1000 cm.
Answer: False

Question 5. The SI unit of distance is cm.
Answer: False

Question 6. The motion of the earth about its axis is rotatory.
Answer: True

Question 7. A flying bird in the sky is at rest.
Answer: False

Question 8. The motion of the wheel of a car is rectilinear as well as circular motion.
Answer: True

Question 9. The object which does not change its position time is said to be at rest.
Answer: True

Question  10. A centimetre is a smaller unit than a millimetre.
Answer: False

Question 11. The measuring tape is used to measure the girth of a tree.
Answer: True

Question 12. A spinning top shows circular motion.
Answer: True

NCERT Class 6 Science Chapter 7 Motion And Measurement Of Distances Assertion-Reason Question And Answers

The following questions consist of two statements Assertion (A) and Reason (R). Answer these questions by selecting the appropriate option given below.

1. Both A and R are true and it is the correct explanation of A.
2. Both A and R are true but R is not the correct explanation of A
3. A is true but R is false
4. A is false but R is true

Question 1.

Assertion (A):  The SI unit of length is metres.

Reason(R): A yard gives the accurate measurement of length.

Answer: 3. A is true but R is false

A yard does not give the correct length because a yard is the length from the chin to the thumb of an outstretched arm. It may vary from person to person.

Question  2.

Assertion (A): While travelling? bus and co-travellers appear to be stationary.

Reason (R):  The position of co-passengers is not changing concerning each other.

Answer: 1. Both A and R are true and it is the correct explanation of A.

Co-travellers appear to be stationary because all are moving at the same speed, so the positions of co-passengers are not changing concerning each other.

Question 3.

Assertion (A): The motion of the earth around the sun is periodic.

Reason (R): The earth repeats its motion after a fixed interval of time.

Answer: 1. Both A and R are true and ft is the correct explanation of A.

The earth repeats its motion every 1 year, hence its motion is periodic.

Question 4.

Assertion (A):  A rolling ball on the ground shows only rectilinear motion.

Reason (R):  A rolling ball moves from one place to another

Answer: 4. A is false but R is true

An assertion is false because the rolling ball shows both rectilinear and rotational motion.

NCERT Class 6 Science Chapter 7 Motion And Measurement Of Distances Match The Columns

Question 1. Match Column A with Column B

Answer:  1- B, 2- A, 3- C

Motion And Measurement Of Distances Multiple Choice Question And Answers

Question 1. The invention  _______________ resulted in the development of animal-driven cars. CBSE Diksha

1. Boat
2. Wheel
3. Roads
4. None of these

Answer: 2. Wheel

Question 2. A piece of ribbon folded five times is placed along a 30 cm long measuring scale.

The length of the ribbon is between 

1. 1.15 m -1.25 m
2. 1.25 m . 1.35 m
3. 1.50 m – 1.60 m
4. 1.60 m – 1.70 m

Answer: 2.  1.25 m . 1.35 m

Read and Learn More NCERT Class 6 Science MCQs

Question 3. Four pieces of wooden sticks A, B, C and D are placed along the length of 30 cm long scale. Which one of them is 3.4 cm in length?

1. 1
2. 2
3. 3
4. 4

Answer: 3.  3

Question 4. Figure shows a measuring scale which is usually supplied with a geometry box. Which of the following distance cannot be measured with this scale by using it only once?

1. 0.1 m
2. 0.15 m
3. 0.2 m
4. 0.06 m

Answer: 2. 0.15 m

Question 5. Which of the following figure shows the correct placement of a block along a scale for measuring its length?

Answer: 3

Question 6. Bholu and Goiu are playing in the ground. They start running from the same point A in the ground and reach point B at the same time by following the paths marked 1 and 2, respectively Which of the following is true for the given situation?

As compared to Golu, Bholu covers a

1. Longer distance but with a lower speed
2. Longer distance with a higher speed
3. Shorter distance with a lower speed
4. Shorter distance with a higher speed

Answer:  2. Longer distance with a higher speed

Question 7. Jenny wants to measure the height of her son. She asks her son to stand against a wall. Which picture shows the correct way of marking his height?

Answer: 2

Question 8. You are provided three scales A, B and C as shown in the figure to measure a length of 10 cm

For the correct measurement of the length, you will use the scale.

1. only A
2. Only B
3. Only C
4. Any of the three scales

Answer: 4. Any of the three scales

Question 9. Each metre is divided into 100 equal divisions called

1. Centimetre
2. Centimetre
3. Kilometres
4. None of these

Answer: 1 Centimetre

Question 10. Which of the following does not express a time Interval?

1. A day
2. A second
3. A school period
4. Time of the first bell in the school

Answer: 4. Time of the first bell in the school

Question 11. The distance between Delhi and Mumbai Is usually expressed In the unit of

1. Decametre
2. Metre
3. Centimetre
4. Kilometre

Answer: 4. Kilometre

Question 12. A ball rolling on the ground represents

1. Rectilinear motion
2. Rotational motion
3. Both 1 and 2
4. None of these

Answer: 3. Both 1 and 2

Question 13. Which of these Is an example of periodic motion?

1. The earth revolves around the sun.
2. The movement of a flag due to wind.
3. A bus moving forward on a curved road.
4. A ball bouncing after being dropped on the floor

Answer: 1. The earth revolves around the sun.

Question 14. Which of these conditions is necessary for rectilinear motion?

1. Moving on a curved line.
2.  Moving on a straight line
3. Moving with a uniform speed.
4. Moving with a non-uniform speed.

Answer: 2.  Moving on a straight line

Question 15. Paheli moves on a straight road from point A to point C. She takes 20 min to cover a certain distance AB and 30 min to cover the rest of the distance BC. She then turns back and takes 30 min to cover the distance CB and 20 min to cover the rest of the distance to her starting point. She makes 5 rounds on the road in the same way. Paheli concludes that her motion is

1. Only rectilinear motion
2. Only periodic motion
3. Rectilinear and periodic motion
4. Neither rectilinear nor periodic

Answer: 3. Rectilinear and periodic motion

Question 16. What type of motion does a spinning top show?

1. Periodic
2. Circular
3. Rectilinear
4. Rotational

Answer: 4. Rotational

Question 17. Motion is defined as a change in the position of an object over time. Motion can be classified as rectilinear motion, circular motion, rotational motion, oscillatory motion and random motion. We can observe that some objects in certain cases show two types of motion at the same time.

Example: A ball is moving along the ground, it shows rectilinear as well as rotational motion. The wheel of a bicycle shows circular motion as well as rectilinear motion.

What type of motion does a butterfly show in a garden?

1. Rectilinear motion
2. Circular motion
3. Random motion
4. Periodic motion

Answer: 3. Random motion

Question 18. A bob of a pendulum shows

1. Periodic motion
2. Circular motion
3. Both (1) and (2)
4. None of these

Answer:  1. Periodic motion

Question 19. The wheel of a bicycle moving on a straight road does

1. Circular motion, rectilinear motion
2. Periodic motion, rotational motion
3. Random motion, oscillatory motion
4. None of the above

Answer: 1. Circular motion, rectilinear motion

Question 20. Which of the following is the SI unit of length?

1. Metre
2. Millimetre
3. Centimetre
4. Foot

Answer:  1. Metre

Question 21. Which of the following have more than one type of motion?

1. Motion of sewing machine
2. A cycle moving on a straight road
3. Motion of the moon around the earth
4. All of the above
5. Answer:  4. All of the above

Question 22. Footstep cannot be considered an SI unit because

1. It varies from person to person
2. People do not measure property with it
3. It is a very old method of measurement
4. Its value is not definite

Answer:  1. It varies from person-to-person

Question 23. A car moving on a straight road is an example of

1. Periodic motion
2. Rectilinear motion
3. Circular motion
4. Rest

Answer:  2. Rectilinear motion

NCERT Class 6 Science Chapter 6 The Living Organisms Characteristics And Habitats Long Questions And Answers

Question 1. Like many animals, although a car also moves, It Is not considered a living organism. Give two or three reasons.
Answer: A car though moving is not considered a living organism because Living organisms can move on their own, whereas a vehicle moves by the burning of fuel; like diesel and petrol. Like all living organisms, a car does not show any other living characteristics like respiration, digestion, reproduction or growth.

Question 2. Ravi and Ritu went on a vacation to different places. They went to Rishikesh, Himalayas, Kerala, and Rajasthan. They saw many kinds of trees, plants and animals, e.g. pine trees in the Himalayas and cacti In Rajasthan. All the places were so different from each other. They clicked pictures, collected samples and showed Them to their teacher asking them to explain the reason behind these variations.

Read and Learn More Class 6 Science Question And Answers

1. Why is there a difference In the type of plants growing In different places?
2. What do you mean by the survival place of an organism?
3. How many types of such places that give living organisms shelter, food, etc. are you aware of?
4. Give an example of variation in plants from different regions.

Answer:

1. Plants growing in different places appear different due to the presence of unique adaptive features which can be morphological or physiological.
2. It is called a habitat. It provides food, water and shelter, on it. to all living organisms.
3. Two types of habitats have been observed
4. Terrestrial
5. Aquatic.
6. Leaves of cactus present in desert, are either absent or are very small and spiny to reduce water loss through transpiration.
7. While leaves of trees like deodars are needle-shaped to let snow falling on them slide off easily.

Question 3. Riya lives in Delhi. During her vacations, she went to Leh with her parents. They all were fine on the way. When they reached Leh, all of them started feeling nauseous and complained of headaches and breathing difficulties. A man travelling with them told them to rest for a few days and everything would be fine. After a few days, Riya observed that the man was right and they were feeling fine.

1. Why was Riya and her family suffering from these symptoms?
2. After 2-3 days everybody was fine. Why?
3. Explain what happened.

Answer: Riya and her family were suffering from these symptoms because they were present at high altitude regions where oxygen supply is limited.

After a few days, everybody’s body had adjusted to the conditions of the mountain region.

When we go from plains to mountains, our body faces difficulties due to the sudden changes it is exposed to. After a few days, however, they all get acclimatised to these sudden changes.

Question 4. A caterpillar coils when touched

• Which feature of the caterpillar Is shown In the picture?
• It grows
• It reproduces
• It breathes through tiny pores on its bodies
• It responds to changes in the environment
• The green colour of a caterpillar helps It to blend with the green leaves. Explain how this helps the caterpillar.

Answer: It responds to changes in the environment.

The green colour of a caterpillar helps it get camouflaged with green leaves. This blending of colour protects the caterpillar from the predators like insects.

Question 5. Sea lions are mammals that live in the seas.

Some common features of sea lions are

• A streamlined body
• Whiskers on the face
• Short fur on the body
• Limbs shaped like flippers
• A layer of fat under the belly

What does the picture show about sea lions?

• They feed mainly on fish
• They enjoy resting on rocks
• They can see underwater
• They produce babies that look similar to adults
• Which two features of sea lions listed above help them swim in water?

Answer:

• They produce babies that look similar to adults.
• The two features of sea lions that help them to swim in water are as follows
• A streamlined body
• Limbs shaped like flippers

Question 6. The given picture is of a desert ecosystem. The biotic component of this ecosystem is the

1. Date plan
2. Sand Dune
3. Sunlight
4. Water

Explain any two adaptations observed in a cactus that help it to survive in a desert.

Answer:

1. Date palm
2. The two adaptations observed in a cactus that help it to survive, in a desert are as follows (a) Roots are very deep for absorbing water from larger areas.
3. Roots are very deep for absorbing water from larger areas.
4. Leaves are either absent or very small and spiny to reduce water loss through transpiration.

Question 7. The picture shows a cactus. It Is found In hot deserts. Explain how the leaves of the cactus help it to survive In its habitat.

Answer: In cactus, leaves are reduced to spines. Which prevents loss of water (through transpiration). This adaptation helps them to survive in hot deserts

Question 8. State and explain any two features observed in a lotus plant that help it to adapt to an aquatic habitat.

Answer: Two features observed in a lotus plant that help it to adapt to an aquatic habitat are

• The stems are long, hollow and light. This feature makes their stem buoyant.
• The stems grow up to the surface of water and the leaves and flowers float on the surface of water. This increases the exposure to light.

Question 9. The picture shows different animals

Which animals In the picture live In the same habitat?

1. Starfish and snail
2. Earthworm and snail
3. Earthworms, ants and snail
4. Snail, starfish and earthworm

What Is common to all the animals in the picture? Circle ‘Yes’ or ‘No’ for the correct response.

Answer:

1. Earthworms, ants and snail
2. No
3. Yes
4. Yes

NCERT Class 6 Science Chapter 6 The Living Organisms Characteristics And Habitats Short Questions And Answers

Question 1. What are the surroundings of plants and animals in the sea and desert?
Answer: In the sea, plants and animals are surrounded by saline (salty) water. Most of them use the air dissolved in water. In the desert, there is very little availability of water.

It is very hot during the daytime and very cold at night in the desert. The animals and plants of the desert live on the desert soil and breathe air from the surroundings.

Question 2. Are sunlight and heat biotic or abiotic components?
Answer: Sunlight and heat are abiotic components

Question 3. Which of the following are living? A forest, trees, creepers, small and big animals, birds, snakes, Insects, rocks, soil, water, air, dry leaves, dead animals, mushrooms and moss.
Answer: Living things are as follows A forest, trees, creepers, small and big animals, birds, snakes, insects, mushrooms and moss.

Question 4. How can you distinguish between living and non-living things?
Answer: The differences between living and non-living things are as follows

Question 5. Do non-living things show growth?
Answer: Yes, non-living things show growth. They increase in size and mass, for example; clouds.

Question 6. Can we live without breathing?
Answer: No, we cannot live without breathing. It is a part of a process called respiration. It is through respiration that the body finally obtains energy from the food it takes.

Question 7. How do we respond, if we suddenly step on a sharp object like a thorn, while walking barefoot?
Answer: If we suddenly step on a sharp object like a thorn, while walking barefoot we withdraw our foot.

Question 8. How do we feel when we see or think about our favourite food?
Answer: When we see or think about our favourite food, water starts filling our mouths.

Question 9. What happens when we suddenly move from a dark place to bright sunlight?
Answer: When we suddenly move from a dark place to bright sunlight our eyes shut themselves automatically for a moment till they adjust to the changed bright surroundings.

Question 10. Give some examples of responses of animals to stimuli.
Answer: Some examples of responses of animals to stimuli are as follows

1. Wild animals run away when a bright light is flashed towards them.
2. Cockroaches begin to move to their hiding places if the light in the kitchen is switched on at night.

Question 11. Do plants respond to stimuli? 
Answer: Yes, plants respond to stimuli. For example, in some plants, flowers close after sunset and in some plants like ‘touch-me-not’, leaves close when touched.

Question 12. What is a habitat?
Answer: The place where organisms live is called habitat. It means a dwelling place (a home).

Question 13. How are cactus adapted to survive in a desert?
Answer: To survive in a desert, a cactus has the following adaptations

• Leaves are either modified into spines or are absent to prevent water loss through transpiration.
• Stem is modified to perform photosynthesis and covered with a thick waxy layer to retain water.
• The root system of the cactus is well-developed and grows deep to absorb water.

Question 14. Which of the things in the following list are non-living? Plough, mushroom, sewing machine, radio, boat, water hyacinth, earthworm
Answer: Non-living things do not possess life and do not need food, air or water. Thus, in the given list plough, sewing machines, radios and boats are non-living objects.

Question 15. Give an example of a non-living thing which shows any two characteristics of living things.
Answer: A cloud is an example of a non-living thing which shows the following two characteristics of living things

1. It increases or decreases in size.
2. It shows movements.
3. (Another example can be a car which moves from one place to another and also requires energy, i.e. petrol).

Question 16. Which of the non-living things listed below, were once part of a living thing? Butter, leather, soil, wool, electric bulb, cooking oil, salt, apple, rubber
Answer: The following are the non-living things from the list which were once part of living things

• Butter Obtained- from milk from dairy animals
• leather- From animal skin
• Wool- From the hair of sheep or goat
• Cooking oil- Seeds Of plants
• Apple- Fruit From Apple Tree
• Rubber- Latex Of Rubber Tree.

Question 17. List the common characteristics of the living things.
Answer: Living things have the following common characteristics-

1. Growth
2. Movement
3. Reproduction
4. Respirator
5. Respond to stimuli
6. Excretion

Question 18. Explain why speed is important for survival in the grasslands for animals that live there. Hint There are few trees or places for animals to hide in grassland habitats.
Answer: In grasslands, there are a limited number of trees and places for animals to hide. When the enemy attacks an animal, it has to run fast, to reach a safe place. If it fails, it has to lose its life. So, speed in such places as grasslands is very important for the survival of animals.

Question 19. A habitat Is said to have two supporting components. What are they?
Answer: A habitat includes

• A living component is called an abiotic.
• Non-living components are called abiotic.

Question 20. Why do desert snakes burrow deep into the sand
Answer: Snakes in the desert burrow deep into the sand during the daytime because the deeper layers of sand are cooler which allows them to stay away from the heat of the desert that persists through the daytime.

Question 21. Some desert plants have very small leaves, whereas some others have only spines. How does this benefit you during the day? the plants?
Answer: Desert plants have very small leaves or spines as adaptations to dry conditions. Because of these modifications, the surface of the lamina is reduced thereby reducing water loss by transpiration as water is scarce in desert habitats.

Question 22. The presence of needle-like leaves on trees growing in extreme cold helps them to survive the cold conditions. Explain.
Answer: Many mountain trees have small, needle-like leaves due to which these leaves lose very little water in windy conditions. This helps the mountain trees to survive in winter when all the soil water is frozen in the form of ice and not available to their roots.

The needle-like leaves have a thick waxy layer (or cuticle) to reduce the loss of water through transpiration and to protect them from damage by rain and snow.

Question 23. An animal has a round body, small ears and thick fur on its body, feet and toes. This animal has a thick layer of fat beneath its skin to provide insulation.

• The feet of this animal Are also bigger.
• Identify this animal.
• Name the possible habitat of this animal.

Answer: This animal is a snow leopard.

The habitat of this animal is the mountain where snow is present.

Question 24. Explain why many mountain trees are cone-shaped having sloping branches.
Answer: The trees in mountain habitats are usually cone-shaped having sloping branches because this shape of the mountain trees makes the rainwater and snow slide off easily without damaging the branches and leaves.

Question 25. What are the specific features present In a deer that help It to detect the presence of predators like lions?
Answer: A deer has the following specific features that help it to detect the presence of predators like lions.

• Long ears to hear the movement of predators.
• Eyes on the sides of its head which allows it to look in all directions.

Question 26. Aquatic plants undergo some modifications to adapt to their habitat. List any two of those.
Answer: Two adaptations of aquatic plants are

• The roots of these plants are small just to keep the plant in place.
• Stems are hollow with large spaces which help in floating.

Question 27. Write the adaptation in aquatic plants due to which

• Submerged leaves can bend in the flowing water
• Leaves can float on the surface of water

Answer: The adaptations are

• Leaves ofsubmerged aquatic plants are narrow and ribbon-like which allows them to bend in the flowing water.
• Stems/Stalks of leaves of aquatic plants are long, hollow and light which allows them to float on the surface of water.

Question 28. Read the features of different plants given below

• Thick waxy stem
• Short roots
• Cone-shaped plants
• Sloping branches
• Small or Spine like leaves
• Hollow stem

Choose the type of plant for every adaptive feature given in a, b, c, d, e and f from the list given below Aquatic plant, desert plant, mountainous plant.

Answer: Given below are the features of their corresponding type of plant,

• Thick waxy stem – desert plant
• Short roots – aquatic plant
• Cone-shaped plants-mountainous plants
• Sloping branches – mountainous plant
• Small or Spine leaves- desert plant
• Hollow stem – aquatic plant

Question 29. Montlonono adaptation present In the following

• In camels to keep their bodies away from the heat of sand.
• In frogs to enable them to swim.
• Dolphins and whales breathe In air when they swim near the surface of the water.

Answer: Camels have long legs to keep their bodies away from the heat of sand.

• Frogs have webbed feet that enable them to swim,
• Dolphins and whales have blow holes which help them to breathe in air when they swim near the surface of water.

Question 30. List the types of movements seen In plants.
Answer: We sec the following movements in plants

1. Opening and dosing off lower.
2. Growth of stem and leaves.
3. Growth of stems and twigs towards light and roots towards soil and water.

Question 31. Pahell has a rose plant In her garden. How can she Increase the number of rose plants In the garden?
Answer: Paheli can increase the number of rose plants in the garden by planting stem cuttings of the rose plant. This will lead to the reproduction of the rose plant.

Question 32. Plants are also called living beings. Mention any two characteristics that support this classification.
Answer: Plants are called living beings because

• They carry out the respiratory process.
• They respond to stimuli.
• A car though moves is not considered a living organism because of the following reasons
• Living organisms can move on their own, whereas a car moves by the burning of fuel; like diesel and petrol.
• Like all living organisms, a car does not show any other living characteristics like respiration, digestion, reproduction or growth.

NCERT Class 6 Science Chapter 6 The Living Organisms Characteristics And Habitats Very Short Questions And Answers

Question 1. Camels live in desert habitats. How do they adapt to such a harsh climate?
Answer: Camels have long legs, a hump and padded feet. All of these are adaptive features that help camel to survive in desert habitats.

Question 2. Name the place where an organism lives and gets its food.
Answer: Habitat is a place where an animal lives and gets its food.

Question 3. Using the following words, write the habitat of each animal given in figures (a to d). Grassland, mountain, desert, pond, river

Answer:

• The diagram is of a deer which lives in grassland
• The diagram is of a frog which lives in the pond
• The diagram is of a yak which lives in the mountain
• The diagram is of a camel which lives in the desert

Question 4. Classify the following habitats into terrestrial and aquatic types. Grassland, pond, ocean, rice

Answer: The habitats can be classified as

• Terrestrial habitats
• — Grassland and rice field
• Aquatic habitats — Pond and ocean

Question 5. Adaptation to habitat does not take place in a short time. Explain.
Answer: It takes thousands of years for the abiotic factors to change and support the animals and plants present there,

Question 6. Animals like mountain goats and snow leopards do not slip or fall. Why?
Answer: These animals have big and padded feet and strong hooves to spread their weight which prevents them from slipping and falling on the mountains.

Question 7. Mention two ways by which animals cope with low temperatures.
Answer: Animals living in colder areas have hairy skin and a thick layer of fat under their skin to warm their bodies.

Question 8. Name the adaptation of hiding by merging with the surroundings.
Answer: Camouflage.

Question 9. Leaves of mountain trees prevent damage by snow or rain. How?
Answer: The needle-like leaves of these trees have a thick waxy layer called cuticle which protects the leaves from any kind of damage.

Question 10. Lions have very high agility. Why do they need this type of adaptation?
Answer: As a predator, they have to hunt for food which is not easy as prey like deer are very fast. Thus, they have high agility.

Question 11. A few animals can live in both places, i.e. land and water. Name at least two.
Answer: Few animals have adaptations to live both in water as well as land. These are called amphibians, e.g. frogs and toads.

Question 12. An adaptation requires a change In the body shape of the animals present. Name the habitat and the modification present.
Answer: Animals in aquatic habitats have streamlined bodies which help them survive underwater.

Question 13. Growth is an important characteristic of living beings. Support this statement.
Answer: Growth represents an increase in the weight and size of living beings as time passes. Non-living things do not grow over time.

Question 14. During respiration, gases are exchanged in our lungs. What are these gases? Answer: Carbon dioxide is given off and oxygen is taken in by our lungs.

Question 15. Why is reproduction important for organisms?
Answer: Reproduction is important for organisms as it leads to the production of more individuals of their kind. This helps in the continuity oflife on the Earth.

Question 16. Unscrnmblo tho words given below to got tho correct words using tho clues given against them.

1. SATPADAOINT specific features or certain habits which enable a living being to live In Its surroundings.
2. RUTRCQXNI waste products are removed by this process.
3. LUMISIT all living things respond to these.
4. ROUCDPRENTOI Because of this we find organisms of the same kind.

Answer:

1. Adaptations
2. Excretion
3. Stimuli
4. Reproduction.

NCERT Class 6 Science Chapter 6 The Living Organisms Characteristics And Habitats Fill In the blanks.

1. The presence of specific features which enable a plant or an animal to live in a particular habitat is called adaptation

2. The habitats of the plants and animals that live on land are called terrestrial

3. The habitats of plants and animals that live in water are called aquatic

4. Soil, water and air are the habitat abiotic

5. Changes in our surroundings that make us respond to them are called stimuli

6. Plants and animals living on land, are called terrestrial organisms.

7. Soil, water and air are the abiotic components of a habitat.

8. Desert plants have long roots for better absorption of minerals and water.

9. Some objects are characterised as living while others as non-living

10. The animals depend on it for their food plants.

11. Webbed feet is a feature found in frog

12. A habitat has biotic and Abiotic components that interact with each other.

13. Fishes have gills for respiration.

NCERT Class 6 Science Chapter 6 The Living Organisms Characteristics And Habitats True Or False

1. Fin is for aquatic life in fishes. True

2. Mountain is a special terrestrial habitat with low temperature. True

3. Almost all types of plants are found in the sea. False, Only Those Plants that are adapted to aquatic Habitats are found in the sea.

4. Frog has dry skin. False, the frog has wet and slimy skin

5. All living beings need water. True

6. The non-living objects carry out respiration. False, non-living things cannot carry out respiration. It is a feature of living things.

7. Leaves of touch-me-not plant curl up when touched. True

8. In cacti, leaves are reduced to spines. True

NCERT Class 6 Science Chapter 6 The Living Organisms Characteristics And Habitats Assertion-Reason Questions

The following questions consist of two statements. Assertion (A) and Reason (R). Answer these questions by selecting the appropriate option given below.

1. Both A and R are true and R is the correct explanation of A
2. Both A and R are true, but R is not the correct explanation of A
3. A is true, but R is false
4. A is false, but R is true

1. Assertion (A) Forests, grasslands, deserts and mountain regions are examples of terrestrial habitats.
Reason (R) The plants and animals that live on land are said to live in terrestrial habitats.

2. Assertion (A) The eyes of a lion are in front of the face.
Reason (R) They help to get the correct idea about the location of its prey.

3. Assertion (A) Non-living things react to changes in their surroundings.
Reason (R) Changes in surroundings that make us respond to them are called stimuli.

Answer:

1. Both A and R are true, but R is not the correct explanation of A.
2. Both A and R are true and R is the correct explanation of A.
3. A is false, but R is true. A can be corrected as Living things react to changes in their surroundings, i.e. they respond to stimulus.

NCERT Class 6 Science Chapter 6 The Living Organisms Characteristics And Habitats Match The Columns

Question 1. Match the Column 1 with Column 2.

Answer: A-2, B-4, C-5, D-3, E-1

Question 2. Match the Column 1 with Column 2.

Answer: A-1,B-5, C-2, D-3.E-4

Question 3. Match the Column 1 with Column 2.

Answer: A-4, B-5.C-2, D-1, E-3