Plate Tectonics

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Across
  1. 2. molten mixture of rock forming substances
  2. 4. under continents
  3. 5. valley that runs along the crest of mid ocean ridge
  4. 7. when molten mixture reaches surface
  5. 10. theroy that pieces of Earth's lithosphere(plates) have moved.
  6. 12. flowing liquids(in the core)
  7. 14. transfer of heat through solid matter as one atom strikes another
  8. 15. Earth's surface or outermost layer
  9. 17. plates under oceans
  10. 18. Earth's moving section we call plates
Down
  1. 1. transfer of heat by flowing materials such as liqud or gas
  2. 2. system of underwater mountain ranges
  3. 3. Earth's thickest and heaviest layer found just below crust
  4. 6. a weak spot in the crust where molten material comes to the surface
  5. 8. Earth's center made of mostly metals
  6. 9. scientists who study earth
  7. 11. a technology way that mapped the ocean floor
  8. 13. solid(in the core)
  9. 16. geologist Harry Hess sugested sea floor spreading in this year
  10. 19. super mass of all of the continents