Seafloor Spreading

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Across
  1. 2. device used to map the ocean floor
  2. 4. Geology Professor
  3. 6. plates moving together
  4. 7. heating, rising, cooling, and sinking
  5. 8. plates sliding past each other
  6. 9. plates moving away from each other
Down
  1. 1. plastic-like layer of the mantle
  2. 3. German meteorologist
  3. 5. oceanic plate goes underneath a continental