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Across
  1. 2. when opened, creates land underwater
  2. 5. melted metal,that's all you need to know
  3. 8. very upper part of mantle and part of crust
  4. 10. then earths tectonic plates move apart they create this
  5. 13. plates move vertically
  6. 14. circle cycle of heat
  7. 16. theory made by tectonic plate theory
Down
  1. 1. opposite type metal of number 5(property)
  2. 3. about 200km thick and apart of earth
  3. 4. small zone where one plate falls under another
  4. 6. opposite of number 12
  5. 7. how heavy something is
  6. 9. very big continent
  7. 11. same as 8 but a little bit further down
  8. 12. plates move together
  9. 15. just a little bit down after # 3