Across
- 2. any trace of anything ancient
- 4. a rock that is normally light colored
- 6. supercontinent
- 7. outer skin of the earth
- 10. when somthing goes back into the mantle
- 12. the last layer in our earth
- 14. a deep valley
- 15. the pieces called what?
- 16. wegeners idea that the continents move is called
- 18. mountains under water
- 19. colliding of the plates
Down
- 1. a dark fined grained rock
- 3. generates earthquakes
- 5. force pressing on something
- 6. the earth's motion into a single theory
- 8. separating of the plates
- 9. when the oceanic crust bends down
- 11. a part of the earths inner
- 13. breaks in earths crust
- 17. a device that shows us down far below the ocean