Plate Tectonic and Sea Floor Spreading ​Vocab

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Across
  1. 5. The floor of sea
  2. 7. Plates slide across each other
  3. 11. Another name for hills
  4. 13. An idea and possible fact
  5. 14. Plates moving away from eachother
  6. 15. Worlds mainland's
  7. 16. Plate covers one another
Down
  1. 1. Layer of crust and upper mantle
  2. 2. Covers earth and moves
  3. 3. Scientist who studies earthquakes
  4. 4. Deep fracture in earth
  5. 6. Theory continents used to be one
  6. 8. Earth's outside layer
  7. 9. Plates moving towards each other
  8. 10. Movement by warm/cool fluids
  9. 12. Moving pieces on earth
  10. 17. Plates form mountains, crashing together