Across
- 5. Large, dark areas of the moon. Means "seas" in Latin
- 9. about 8000 miles
- 11. a small, rocky object that orbits the Sun
- 12. the spinning motion of a planet or satellite on its axis
- 16. markings on the moons surface that are visible to earth
- 17. The second full moon in a month
- 18. The movement of an object around another object
Down
- 1. about 28 days
- 2. the pattern of phases of the moon
- 3. about 2000 miles
- 4. phase after new moon
- 6. a large round pit caused by the impact of an asteroid
- 7. No moon is visible because the sun is only illuminating the side of the moon the earth does not see
- 8. a force of attraction between objects that is due to their masses
- 10. a natural object that revolves around a planet
- 13. the path an object follows as it moves around another object
- 14. The alternate rising and falling from the sea
- 15. phase after waxing gibbous