Plate techtonics

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Across
  1. 5. the plates under the ocean
  2. 6. underwater mountains
  3. 8. the theory of making volcanos
  4. 9. the seafloor separating
Down
  1. 1. a plate sliding under another plate
  2. 2. movement of continents
  3. 3. the plates that makeup continents
  4. 4. large continent
  5. 7. deepest part of the earth