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