Plate tectonics, earthquakes, volcanos

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Across
  1. 3. Pulls on Earths Crust stretching it to make it thinner
  2. 6. A Volcano that is a mix of bombs ash and cinders
  3. 9. Molten mixture of rock forming substances, gases, and water from the mantle
  4. 12. A wave or series of waves produced by a earthquake or a landslide
  5. 13. A volcano that is like a sleeping volcano it poses medium threat but it could reawaken someday
  6. 14. A volcano that has slow and steady eruptions
  7. 16. The shaking and trembling that results from the plate movement is a
  8. 18. The sinking movement of Ocean floor Back in the mantle
  9. 19. Squeezes rocks until it bends or breaks
Down
  1. 1. Rocks being pushed in two opposite directions to the point where it bends or breaks
  2. 2. Zipper like chains of undersea mountains
  3. 4. A structure that forms in Earths crust when molten material or magma reaches Earths surface
  4. 5. A volcano that is a more immediate threat
  5. 7. A number that geologists use to assign to an earthquake based on the earthquakes size
  6. 8. A break in the rock of Earths Crust or mantle
  7. 10. A force that acts on rocks to change the shape or volume
  8. 11. A volcano that has alternating layers of lava and ash
  9. 15. When magma reaches the surface it is known as
  10. 17. An area where lava frequently erupts at the surface independent of plate boundary processes
  11. 20. A dead volcano the pose very little to no threat