graysons crossword puzzle project

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Across
  1. 4. the middle layer of the earth
  2. 7. when tectonic plates slide past each other
  3. 8. when two plates crash into each other
  4. 11. second to last layer of the earth
  5. 12. when plates collide
  6. 14. causes natural disasters
  7. 15. when two plates are moving appart
Down
  1. 1. the top layer of the earth like dirt
  2. 2. when tectonic plates collide with oceanic crust
  3. 3. sideways movement of the edge of an tectonic plate
  4. 5. a long active submarine
  5. 6. the separation of continents
  6. 9. when two or more tectonic plates collide
  7. 10. a current in a fluid mater
  8. 13. the innermost layer of the earth