Plate tectonics

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Across
  1. 3. mountain where lava erupts
  2. 5. rock composed continental and oceanic boundary
  3. 7. plates that move away from each other
  4. 9. heat from the interior to the surface.
Down
  1. 1. heavier plate dives beneath the lighter
  2. 2. formed when plates press against each other
  3. 4. formed by divergent plate boundaries
  4. 6. plates slide sideways past each other
  5. 8. plates that move towards each other
  6. 10. formed by subduction