Plate Tectonics

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Across
  1. 2. plates move apart
  2. 4. is called the movement of plates
  3. 6. The site of oldest ocean crust
  4. 8. under the ocean floor.
  5. 10. Pangaea.
  6. 11. created the Theory of Contenintal Drift?
  7. 13. under the continents.
  8. 15. when two plates collide.
Down
  1. 1. descend into the mantle below trenches in
  2. 3. made when two plates collide
  3. 5. of continents before they separated.
  4. 7. outermost layer of the earth
  5. 8. Wegener proposed the hypothesis that the continents
  6. 9. once assembled together as a supercontinent he
  7. 11. Located under the ocean floor
  8. 12. plates move side slip
  9. 14. a line of mountains connected by high ground.