tecto

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Across
  1. 5. the soft layer under earths plates
  2. 6. the theroy that earths surface is made of moving plates
  3. 9. when continets join together and break apert over time
  4. 10. long mountains found on the ocan floor
  5. 11. the thick layer of rock under the crust
  6. 12. when new ocean crust forms and moves outward
  7. 15. the idea that continets move slowy
  8. 16. ocean the middle part of the oceantogethertinent cycle when continets join togeather and break apart over time
  9. 17. Magnetic clues in rocks that show how earth changed
  10. 18. the center of earth
Down
  1. 1. the hard oter layer of earth
  2. 2. whens earths crust pulls apart and cracks
  3. 3. the huge ocean that surrounded pangea
  4. 4. when new ocean floor forms at ridges
  5. 6. a superconinet that existed long ago
  6. 7. a plpace where plates move toward each other
  7. 8. the thin outer layer of earth
  8. 13. a place where plates slide past each other
  9. 14. a flat step like area of land