Across
- 1. The deeper you go the farther in time you go back
- 4. these planets have lots of moons and are spread out
- 6. When you can only see the dark side of the moon
- 9. this is what causes the seasons
- 11. the remains or impressions of ancient organisms
- 12. rocky planets with a core made of iron
- 13. the thing that holds all of the planets in orbit around the sun
- 14. 365 days or 12 months
- 15. Fossiles used to define and identify gelogic periods
Down
- 2. One object spinning on its axis
- 3. the pull of the planets on their moons
- 5. occurs when the earth blocks light from the moon
- 7. occurs when the moon blocks light from reaching the earth
- 8. Moving around another object
- 10. the law of super position tells us the age of these
- 16. when the moon is fully lit up