Plate motion Word puzzle

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Across
  1. 4. A diagram to show the inside
  2. 6. A natural spring that shows hot water and steam
  3. 7. Hot liquid rock on the surface of earth
  4. 9. A long deep intention in the ocean
  5. 10. ridge An under water ocean
  6. 12. One of a very large section of solid rock
Down
  1. 1. Moving apart in different directions
  2. 2. An extinct animal over 300 million years ago
  3. 3. Evidence from the past
  4. 5. Moving toward the same place
  5. 8. Any of earth main areas
  6. 10. The layer of soft solid rock underneath plates
  7. 11. Hot liquid rock below the surface of earth