Across
- 3. a rock that was once a bone
- 5. when the moon is completely black
- 8. layers of rock
- 10. the result of spinning on an axis
- 12. a force that keeps everything together
- 14. the layer on the bottom is the oldest
- 15. the man who invented gravity's last name
- 16. fossils from 485mya
Down
- 1. a phenomenon that happens when the sun is blocked out by the moon
- 2. the scientific way of saying outer planets
- 4. the scientific term for inner planets
- 6. when the earth is in between the moon and sun
- 7. when the moon seems to be getting smaller
- 9. the reason that there are seasons
- 11. if the northern hemisphere is cold the season in the southern hemisphere would be
- 13. another word for orbit