Plate Tectonics

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Across
  1. 3. liquid layer of the Earth's core
  2. 5. outermost, rigid layer of the Earth
  3. 7. layer between the crust and the core
  4. 11. new lithosphere is created here
  5. 12. outermost layer of the Earth
  6. 13. theory that continents drift apart
  7. 15. solid, dense center of the Earth
  8. 17. piece of the lithosphere that moves on the asthenosphere
  9. 19. the bending of rock layers
Down
  1. 1. soft layer of the mantle
  2. 2. a pulling force
  3. 4. a squeezing force
  4. 6. boundary between two colliding plates
  5. 7. A chain of mountains on the ocean floor where the sea floor is spreading.
  6. 8. a region where a an oceanic plate sinks down into the athenosphere
  7. 9. a break in the Earth's crust
  8. 10. The pathway along which energy travels through a fluid
  9. 14. boundary between two plates moving away from each other
  10. 16. boundary between two plates that are sliding past each other
  11. 18. A supercontinent that existed about 200 million years ago but broke apart into several continents.