Restless Earth

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Across
  1. 7. shaking and trembles from rock moving
  2. 8. broken place in the crust
  3. 11. boundary where plates move towards each other
  4. 13. volcano away from the boundary
  5. 14. middle layer of earth
  6. 17. plate large piece of lithosphere
  7. 18. bending or twisting of rock
  8. 19. boundary where plates move against each other
  9. 20. drift theory that the continents moved
Down
  1. 1. waves that travel through the earth
  2. 2. solid, flexible layer of earth
  3. 3. theory says lithosphere is broken into pieces
  4. 4. where the broken rock first moves
  5. 5. outside, brittle layer of earth
  6. 6. boundary where plates move away
  7. 9. when one plate moves under another plate
  8. 10. reversal evidence of the Poles switching places
  9. 12. caused by heating and cooling of material
  10. 15. where plates diverge under the ocean
  11. 16. on the surface, above the focus