Across
- 1. plates moving together
- 4. a once super continent
- 5. we live on it
- 6. a big shake in the ground
- 7. The period of time covering the physical formation and development of Earth
- 11. flexible upper layer of the mantle
- 12. plates moving away
- 13. plates moving side by side
Down
- 2. a use to be mountain
- 3. old on bottom and new on top
- 4. what scientists call the edges where tectonic plates meet
- 8. theory that the continents moved to where they are now
- 9. a bad thing happens
- 10. rigid brittle layer made up of the crust and the uppermost part of the mantle
- 14. naturally occurring solid