Chapters 1-3

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Across
  1. 3. What continent looks like it can connect to South America
  2. 5. A process which the ocean floor sinks beneath a deep-ocean trench then back into the mantle
  3. 7. When the two plates move apart
  4. 9. Current Force that moves plates in mantle
  5. 13. Drift Idea that the continents slowly moved over time
  6. 16. stripes Evidence that the crust comes from the same place and same rate.
  7. 17. Alfred Wegener used these to give evidence that there was a Pangaea
  8. 18. What continent has a crack in Earth's crust that you can walk over
  9. 19. where the ocean floor sinks back into and has the convection currents
Down
  1. 1. In mid-1900s, scientists mapped mid-ocean ridges with this device
  2. 2. The process of subduction and sea- floor spreading can change the shape and blank of the oceans
  3. 4. Wegener Scientist that thought all the continents were all together at once
  4. 6. When the two plates move toward each other
  5. 8. Andreas Fault Famous fault that transform boundaries created
  6. 9. Sea-floor spreading adds more blank to the ocean floor
  7. 10. Supercontinent
  8. 11. When the two plates move past each other
  9. 12. How many years have the plates been moving slowly
  10. 14. Mountains Mountains that run across the west coast of South America
  11. 15. Cracks in the Earth in little pieces