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