Across
- 3. causes day and night
- 6. causes the seasons
- 9. a small planet collided with earth
- 11. hole from space rock
- 12. patterns of weather
- 13. maximum and minimum hours of sunlight
- 14. growing
- 15. moon blocked
- 16. going in shadow
- 17. lightest shadow
- 19. extra high high tide
Down
- 1. orbit
- 2. light colored old and cratered areas
- 4. imaginary line through poles
- 5. shrinking
- 7. sun blocked
- 8. darkest shadow
- 10. dark colored lava filled craters
- 18. barely noticeable