Plate Tectonics

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