Motions Of The Earth
Motions Of The Earth Facts To Remember
The rotation of the earth on its axis causes day and night. Earth completes one rotation in 24 hours.
- Due to its spherical shape, only half of it gets sunlight at a time and the other half remains in the dark causing day and night.
- The revolution of earth around the sun in 365 and VA days; causes seasons.
- There are four seasons in a year—summer, winter, spring, and autumn.
- In the Northern Hemisphere, the longest day and shortest night occur on June 21st.
- On the same date, the Southern Hemisphere has its shortest day and longest night.
- This is the summer solstice.
- In the Northern Hemisphere, the longest night and shortest day occur on December 22nd.
- On the same date, the Southern Hemisphere has its longest day and shortest night.
- This is the winter solstice.
- On March 21st, it is spring in the Northern Hemisphere and autumn in the Southern Hemisphere; and vice-versa on September 23rd.
- In Australia, Christmas is celebrated in summer.
Motions Of The Earth Keywords
Motions Of The Earth Objective Type Questions And Answers
Question 1. Fill in the blanks with appropriate words:
(1). Due to the _________ shape of the earth, only half of it gets light from the sun at a time.
Answer: Spherical
(2). It is autumn in the northern hemisphere on ________.
Answer: 23rd September
(3). It is autumn in the southern hemisphere on ___________.
Answer: 21st March
(4). The axis of the earth makes an angle of ________ with its orbital plane.
Answer: 66 1/2°
Question 2. Match the contents of Column A with that of Column B:
Answer: 1-(c), 2-(d), 3-(b), 4-(a)
Question 3. State whether the given statements are true or false.
(1). The rotation of the earth causes seasons.
Answer: False
(2). Earth moves around the sun in a spherical orbit.
Answer: False
(3). If the earth would not rotate, life would not be possible.
Answer: True
(4). Poles experience six months day and six months night.
Answer: True