1. imaginary line in which the Earth turns
2. turning of the Earth on its axis
3. The movement of the Earth around the Sun
4. start of summer
5. start of winter
6. twenty-four hours
7. path that the Earth follows as it revolves around the Sun
8. leap year
9. equal day and night on September 23
10. equal day and night on March 21
Answers & Comments
Answer:
1.axis
2. earth rotation
3.revolution
4.june
5.december
6.hyphenation
7.orbit
8.calendar year
9.Autumnal equinox
10.equinoxes