1. Motion of the earth on its axis in about 24 hours is called

2. Motion of the earth around the sun is known as

3. What is orbital plane?

4. Which one of the following is the source of light on the earth?

5. The circle that divides the globe into day and night is called

6. The period of one rotation of the earth is known as

7. What would have happened if the earth did not rotate?

8. A year with 366 days is called

9. Why do seasons change on the earth?

10. When do the longest day and the shortest night occur in the northern hemisphere?