Across
- 2. oldest index fossil
- 4. moon is completely lit up
- 5. outside asteroid belt
- 9. law of ____
- 10. spin on axis
- 14. rocky surface
- 16. force of attraction
Down
- 1. regular changes in temp
- 3. earth blocks moon
- 6. remains of ancient organisims
- 7. discovered gravity
- 8. pages of earths history book
- 11. move in circular orbit
- 12. moon blocks sun
- 13. seasons are about 3 ___ apart
- 15. moon is completely covered