Plate Tectonic Crossword

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Across
  1. 2. Large moving section of lithosphere that contains continents and seafloor
  2. 4. a squeezing force
  3. 7. boundary between two plates moving away from each other
  4. 8. Long chain of underwater mountains
  5. 12. Movement of a fluid because of density differences.
  6. 14. theory that continents drift apart
  7. 15. Deep valley which runs down the middle of a mid-ocean ridge
  8. 17. outermost layer of the Earth
  9. 18. outermost, rigid layer of the Earth
  10. 19. boundary between two colliding plates
Down
  1. 1. plate piece of the lithosphere that moves on the asthenosphere
  2. 2. Name of the hypothetical great continent
  3. 3. boundary between two plates that are sliding past each other
  4. 5. layer between the crust and the core
  5. 6. a region where a an oceanic plate sinks down into the athenosphere
  6. 9. soft layer of the mantle
  7. 10. the bending of rock layers
  8. 11. a break in the Earth's crust
  9. 13. the central part of the Earth below the mantle
  10. 16. a pulling force