plate tectonic

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Across
  1. 1. trench, depression in the ocean floor
  2. 4. crust that is heavier than the continental
  3. 7. a volcano that has secondary cone
  4. 9. magma reaches the earth surface
  5. 10. a broad base volcano with gentle sloping sides
  6. 11. opening of the earth's surface
  7. 12. plates boundary that will not create volcano
  8. 14. boundary , the place where two plates meet
  9. 15. A very beautiful composite volcano at the summit covered by ice found in Japan
Down
  1. 2. located in the middle of the earth
  2. 3. lava that is thin
  3. 5. current, reason for plates to move
  4. 6. lava that cools and solidifies quickly
  5. 8. earth's crust which float on magma in the mantle
  6. 13. ridge, underwater mountain