Plate Tectonics Crossword Puzzle SK #17

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Across
  1. 1. -transfer of heat through direct contact
  2. 5. -located in the mantle where the convection currents are
  3. 6. -Boundaries that collide
  4. 8. -a valley that is very deep
  5. 10. -Molten that has erupted underneath the earth's surface
  6. 12. -Believed to be the super continent before the continents separated
  7. 13. -transfer of heat through space
  8. 14. -3rd layer of earth, only layer that is a liquid
  9. 15. -Crust + Mantle=?
  10. 17. -Plates that move apart from each other
  11. 19. -Scientist who came up with the hypothesis that the earth's continents moved
Down
  1. 2. -The theory that continents moved over time
  2. 3. -The transfer of heat through a liquid
  3. 4. -The transfer of heat through a liquid
  4. 7. -4th layer of the Earth and back in the mantle
  5. 9. -Plates that slide past each other
  6. 11. -3 layers, upper, middle, and lower, 2nd layer of Earth
  7. 16. -the ocean floor sinks underneath an ocean trench
  8. 18. -the force upon an object
  9. 20. -Molten that has erupted on the earth's surface