Restless Earth

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Across
  1. 5. Wegener's theory (2 words)
  2. 9. Making new ocean floor (3 words)
  3. 13. Continent that fits next to S. America
  4. 14. Plates that are moving
  5. 16. Pangaea was a single ______
  6. 17. Plates sink below other plates
  7. 18. The fossilized fern found in antartica
Down
  1. 1. When Earth's magnetic poles change(2 words)
  2. 2. Part of Earth with convection currents
  3. 3. The man who proposed continental drift
  4. 4. Mid ocean ridges form _________chains
  5. 6. The name of wegener's supercontinent
  6. 7. Remains of plants and animals in stone
  7. 8. Crust farther away from the mid ocean ridge
  8. 10. Ocean that is geting larger every year
  9. 11. Used to map the ocean floor
  10. 12. Melted rock coming up to the ocean floor
  11. 15. Crust closer to the mid ocean ridge