Plate tectonics

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Across
  1. 2. an object that's reduced to liquid form by heating
  2. 8. shelves The ocean floor next to coastlines
  3. 10. solid material that is moved and deposited in a new location
Down
  1. 1. the floor of a sea or ocean
  2. 3. the outermost shell of a terrestrial planet
  3. 4. chains separated by a central valley.
  4. 5. ridge two parallel
  5. 6. the solid bulk of Earth's interior
  6. 7. Broken pieces of the lithosphere
  7. 9. A freshwater animal