crossword science

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Across
  1. 4. the gradual movement of the continets
  2. 5. when the plate goes in the mantul
  3. 7. the rigid outer part of the earth
  4. 8. developed by Hess
  5. 12. when two plate come together
  6. 14. the act of compressing
  7. 15. the part we live on
  8. 16. the center of the earth
  9. 18. the inner most of the earth
  10. 19. the most solid bulk of the earth interior
Down
  1. 1. properties that involve a reaction
  2. 2. boundaries sea floor spreading ocean get farther appart
  3. 3. the region of the earth atmosphere
  4. 6. the formation of new sea floor crust
  5. 9. substance consisting of two or more substances mixed
  6. 10. when two tectonic plats move past one another
  7. 11. the outside of the inner core
  8. 13. plates of the earth crust
  9. 17. fracture between the earth's crust