tectonic plates

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Across
  1. 3. "under"
  2. 5. move together
  3. 7. "caused by convergent Boundary"
  4. 8. "less dense"
  5. 9. "slip & slid"
Down
  1. 1. divide
  2. 2. "occurs at mid-ocean ridge"
  3. 4. "more dense"
  4. 6. break apart
  5. 10. lava like substance