Assignment Chapter -3 Geography

3. Motions of the Earth
Q 1 What is revolution?
Q 2 What is the shape of the Earth‘s orbit?
Q 3 What is Circle of Illumination?
Q 4 Define orbital plane.
Q 5 What are the two factors responsible for the formation of seasons?
Q-6When does rays direct on the equator?
Q 7 What is the angle of inclination between earth‘s axis and orbital plane?
Q 8 When are sun‘s rays direct on the Tropic of Cancer?
Q 9 What is earth day?
Q 10 What would happen if the earth did not rotate?
Q 11 Why both hemispheres experience different winter and summer solstice?
Q 12 What is Winter Solstice?
Q 13 What is Summer Solstice?
Q 14 Define the following terms:
A. Dusk                       B. Dawn
Q 15Why the southern hemisphere celebrates Christmas in summers?
Q 16 What do you understand by the term autumn equinox?
Q 17 Distinguish between summer solstice and winter solstice?
Q 18 What is Equinox?
Q 19 Why for about six months day and six months night experienced by poles ?
Q 20 Does the earth follow exactly the same orbit every year



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