Plate Tectonics

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Across
  1. 1. where part of the ocean floor goes into the mantle and creates new ocean material
  2. 3. the theory that the continents once were together and the drifted apart
  3. 4. where new ocean floor material comes up from the mantle
  4. 5. slide past
  5. 8. breaks in earths crust, San Andreas _____
  6. 11. supercontinent 300 million years ago
  7. 14. result of a force pushing on an object
  8. 15. the act of material spreading out from the mid ocean ridges
  9. 16. divide
  10. 18. an instrument used to locate mid ocean ridges
  11. 19. underwater canyons
  12. 20. part of the crust and upper mantle
Down
  1. 2. in the mantle, warms the earth
  2. 6. where pieces of land diverges
  3. 7. has the convection current
  4. 9. force that builds up, volcanoes
  5. 10. collide
  6. 12. earthquakes
  7. 13. pieces on the lithosphere that are broken into pieces
  8. 17. organism preserved in rock