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What is the shape of the Earth?
What is a leap year?
Why do seasons occur?
Why areas near the poles receive less heat?
When Christmas is celebrated in Australia?
Why days and nights are not of equal length?
When do the sun rays fall directly on the equator?
What are the effects of the earth's revolution?
Distinguish between summer solstice and winter solstice?
What causes change in seasons?
Why do the poles experience about six months day and six month night?
Explain the following terms.
Why the southern hemisphere celebrates Christmas in summers?
How is the rotation of the Earth responsible for causing day and night?
Which motion of the earth causes change in seasons?
Define rotation and revolution of the Earth.
How long does it take the earth to complete one rotation around its axis?
What do you understand by the term autumn equinox?
Why both hemispheres experience different winter and summer solstice?
What is winter Solstice?