tic tac tonics

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Across
  1. 3. rock found in places across the ocean
  2. 4. plates move away from eachother
  3. 5. sea floor mountain
  4. 7. one plate pushed under another one
  5. 8. long crack on the surface
  6. 9. tectonic plate at the bottem of the ocean
Down
  1. 1. two plates slide past each other
  2. 2. when plates move towards eachother
  3. 6. plates under land masses