Across
- 2. Spring, summer, fall, and winter
- 5. Tool invented to keep track of time
- 10. Imaginary line straight through something
- 12. Moves in a path around another object
- 14. Spins on an axis
- 15. Phases of the Moon that are getting bigger
- 16. Shadows caused by the Earth or Moon
- 18. Shadow made on the Moon by the Earth
- 20. Daily changes in the height of water along coasts
- 21. Hump shaped phase of the Moon
Down
- 1. Phases of the Moon that are getting smaller
- 3. Shadow made on the Earth by the Moon
- 4. A force that pulls things together
- 6. Taking turns or changing back and forth
- 7. Revolves in a way that is controlled by gravity
- 8. Moon phase where you see half of the lighted surface
- 9. Thin curved slice phase of the Moon
- 11. A push or a pull
- 13. Slanted or tipped
- 17. Regular changes in how the Moon looks from Earth
- 19. Object that orbits a planet