Plate tectonics

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Across
  1. 3. spreading new lithosphere is created here
  2. 5. a squeezing force
  3. 8. outermost, rigid layer of the Earth
  4. 12. core solid, dense center of the Earth
  5. 13. boundary boundary between two colliding plates
  6. 14. boundary boundary between two plates that are sliding past each other
  7. 15. a pulling force
  8. 16. plate piece of the lithosphere that moves on the asthenosphere
Down
  1. 1. soft layer of the mantle
  2. 2. a break in the Earth's crust
  3. 4. the bending of rock layers
  4. 6. drift theory that continents drift apart
  5. 7. zone a region where a an oceanic plate sinks down into the athenosphere
  6. 9. core liquid layer of the Earth's core
  7. 10. layer between the crust and the core
  8. 11. boundary boundary between two plates moving away from each other
  9. 17. outermost layer of the Earth