Geology Terms

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Across
  1. 2. moving apart under the ocean
  2. 4. the inner part of the core
  3. 5. massive plates that constantly move
  4. 6. located between asthenosphere and outer core
  5. 9. when a plate moves under another
  6. 10. thinnest layer of the Earth
  7. 12. when the continents move apart
  8. 16. hottest layer of the earth
  9. 17. Earth's ______ is composed of 3 layers
  10. 18. when plates move apart
  11. 20. a theory about plate tectonics
Down
  1. 1. being squeezed together because of pressure
  2. 3. when two plates slide past each other
  3. 6. the distinct layers
  4. 7. when the plates move quickly because of pressure
  5. 8. rift valleys where rock has been stretched
  6. 11. biggest layer of the Earth
  7. 13. the outer layer of the Earth
  8. 14. a mountain where lava comes out of it
  9. 15. when two plates move toward each other
  10. 19. upper layer of the earth's mantle