Plate Tectonics

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Across
  1. 1. Type of plate boundary that destroys things
  2. 3. This boundary can form a rift valley
  3. 7. Part of the pattern created on the ocean floor
  4. 11. The part of the crust made of basalt
  5. 12. What oceanic and continental plates create on a convergent boundary
  6. 13. What happens at a transform boundary
  7. 14. One of the items in the earth that helped prove that Pangea existed
  8. 15. When subduction takes place it happens at a __________ boundary
  9. 17. Cracks in Earth’s crust after plates rub against each other
  10. 18. A deep valley formed by plates moving away from each other
  11. 19. The one continent that existed millions of years ago
Down
  1. 2. The process of one plate sinking underneath another
  2. 3. What Ocean floor sinks into back to the mantle
  3. 4. What two continental plates create on a convergent boundary
  4. 5. A theory about seafloor spreading, Earth’s plates and the plates motion
  5. 6. The part of the ocean floor that lava comes out of
  6. 8. The adding and widening of Earth’s oceans
  7. 9. The part of the crust made of granite
  8. 10. The idea that continents slowly move over the Earth’s surface
  9. 16. The pieces of earth’s lithosphere