Plate Tectonics

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