Across
- 3. the earliest life on earth is developed about one ______ years
- 6. ______is the force that attracts objects together
- 8. the mighty impact "splashed off" rocks and other material into _____
- 10. the _____ impact was massive
Down
- 1. the moon has no___
- 2. the _______ color of the moon is an effect of contrast
- 4. the small planet that hit the earth is named _____
- 5. the moon is made of several ______
- 7. the moons ____ is a hot mass
- 9. under the surface of the moon lies a rocky _____
- 11. the moon is about ___ quarter as wide as the earth