Plate tectonics

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Across
  1. 2. where two tectonic plates meet
  2. 5. tectonic plates move away from each other
  3. 8. liquid iron and nickel
  4. 10. the hot, soft layer of the mantle that tectonic plates float on
  5. 11. dense oceanic crust sinks under continental crust
Down
  1. 1. tectonic plates slide past each other
  2. 3. solid iron and nickel at the very center of Earth
  3. 4. made up of the crust and upper mantle
  4. 6. tectonic plates move toward each other
  5. 7. the outer-most layer of Earth
  6. 9. a piece of the lithosphere