Plate Tectonics

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Across
  1. 5. At a _______ boundary, plates come together or converge.
  2. 8. Earth’s plates are in slow constant motion
  3. 9. Boundary where earthquakes happen
  4. 11. The theory that the continents have moved
  5. 12. Supercontinent
  6. 13. Sea-floor ______
  7. 15. Earth’s plates meet at ______.
  8. 17. San Andreas is an example of a _____.
  9. 18. Molten material that forms the ocean floor
  10. 19. Magma close to the mid-ocean ridge is hotter and ________.
Down
  1. 1. Deep valley formed from divergent plates
  2. 2. The layers of magnetic fields that differ with each stripe
  3. 3. This is created when an oceanic plate goes underneath a continental plate
  4. 4. Boundary where plates move away from each other
  5. 6. Cooled lava in pillow like shapes
  6. 7. Magma on the ocean floor farther away from the mid-ocean ridge is _____ and denser.
  7. 10. Underwater mountain ranges are also known as ________.
  8. 14. When one plate goes under the other
  9. 16. Drilling _____ Scientists collected from the ocean floor.
  10. 20. Tool that helped scientists see map the ocean floor