Tectonic Plates

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Across
  1. 2. molten rock in Earth's crust
  2. 4. a _________ plate is a rigid layer of the Earth's crust that is believed to drift slowly
  3. 11. a geological process in which one edge of a crustal plate is forced sideways and downward into the mantle below another plate
  4. 12. a pulling force
  5. 13. result of shifting plates
  6. 15. a squeezing force
  7. 17. soft layer of the mantle
  8. 18. outermost layer of the Earth
  9. 20. ___________ boundary is between two plates moving away from each other
  10. 21. the bending of rock layers
Down
  1. 1. a break in the Earth's crust
  2. 3. ___________ boundary is between two plates that are sliding past each other
  3. 5. layer between the crust and the core
  4. 6. continental _______ is a theory that continents drift apart
  5. 7. __________ boundary is between two colliding plates
  6. 8. caused by an earthquake or Earth vibration
  7. 9. outermost, rigid layer of the Earth
  8. 10. _________ plate is a piece of the lithosphere that moves on the asthenosphere
  9. 14. the innermost layer of the earth
  10. 16. sea-floor _________ is how a new lithosphere is created
  11. 19. minor plate shift