Plate Tectonics Crossword

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Across
  1. 5. layer of rock that forms Earth's outer surface
  2. 7. the process of oceanic crust entering the mantle.
  3. 9. Name of a single landmass that broke apart 200 million years ago
  4. 10. theory that the plates are in slow constant motion
  5. 11. used to see the sea floor
  6. 12. The process of the seafloor renewing because of convection currents
  7. 13. causes rift valleys if on land
  8. 15. something you eat off of
  9. 16. boundary that produces mountains with 2 continental plates
  10. 19. movement of a fluid, caused by differences in temperature
  11. 20. layer of hot, solid material between the crust and core
Down
  1. 1. Undersea mountain chain where a new ocean floor is produced
  2. 2. remains of organisms that lived in the past
  3. 3. break in Earth’s crust
  4. 4. point of subduction
  5. 6. causes earthquakes
  6. 8. theory that the continents are moving across the Earth
  7. 14. scientist that came up with continental drift
  8. 17. there is a popular blank in Iceland
  9. 18. mountain with molten lava that can rise to the surface