Tsunami Crossword Puzzle

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Across
  1. 4. Iron and nickel
  2. 5. Seafloor
  3. 7. Crust + uppermost mantle
  4. 9. Continous chain of volcanic mountains
  5. 11. Two plates sliding
  6. 12. Sinking of a plate
Down
  1. 1. Cracks in the earths surface
  2. 2. Collision of plates
  3. 3. One plate subducted under the other
  4. 5. Upper mantle
  5. 6. Hydrothermal vent
  6. 8. Surrounds the planet
  7. 10. Near melting point of rock; semi-plastic
  8. 13. Two plates separating
  9. 14. Iron-rich, under extremely high temp. and pressure