Sea Floor

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Across
  1. 1. smokers _____ ______ form when minerals emerge through a vent
  2. 5. Where one plate dips into the mantle.
  3. 7. Upper mantle
  4. 12. The sea floor
  5. 14. Outermost layer of the Earth
  6. 15. Inner-most part of the Earth
Down
  1. 2. The uppermost mantle and crust
  2. 3. _____ vents occur when sea water seeps into cracks on the sea floor
  3. 4. Layer of Earth with rock at the melting point
  4. 6. Boundary with two plates colliding
  5. 8. Boundary with two sliding plates
  6. 9. Mountains that form by some plate boundaries
  7. 10. What field reverses direction every 700,000 yrs?
  8. 11. Boundary with two plates separating
  9. 13. The most known "supercontinent"