Plate Tectonics

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Across
  1. 2. outermost layer of earth layers
  2. 6. convergent plate boundary
  3. 8. thinner and denser than continental
  4. 11. thicker and less dense than Oceanic
  5. 12. plates coming apart
  6. 13. deep valley in an ocean subduction zone
  7. 15. plates sliding against each other
  8. 17. where convection currents happen
  9. 18. upper layer of earth
Down
  1. 1. one plate sinking below another
  2. 3. where two plates meet
  3. 4. divergent plate boundary below water
  4. 5. plates move on top of this plastic layer
  5. 7. innermost layer of the earth
  6. 8. liquid layer of ion and nickel
  7. 9. plates coming together
  8. 10. chunk of lithosphere that moves around
  9. 14. where hot rock rises from the mantle and erupts onto the surface of the earth
  10. 16. molten rock beneath the earth's surface
  11. 19. divergent plate boundary on land