plate tectonics

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Across
  1. 2. mass
  2. 6. underwater mountain chains
  3. 7. a process of how the ocean crust sinks
  4. 8. Hess researched sea floor
  5. 9. temperatures
Down
  1. 1. movement of a fluid caused by
  2. 3. mantle rises forms magma
  3. 4. transfer thermal energy
  4. 5. transferring particles