Plate Tectonics Vocab

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Across
  1. 4. solid layer between earth's crust and core
  2. 7. transfer of heat by movements of a heated fluid
  3. 8. transfer of heat by direct contact of particles
  4. 10. scientist that hypothesized pangea
  5. 11. soft layer of mantle
  6. 15. places where two or more plates meet
  7. 16. a plate boundary where two plates move past each other in opposite directions
  8. 18. transfer of energy through empty space
  9. 19. rigid layer from uppermost part of crust
Down
  1. 1. crust found on earth's continents
  2. 2. oceanic crust sinks beneath a trench and back into the mantle
  3. 3. a break in earth's crust where slabs of rock slip past each other
  4. 5. type of crust found under earth's oceans
  5. 6. a device that determines object distance under water by sound waves
  6. 9. a plate boundary where two plates move away from each other
  7. 12. hypothesis that continents slowly move across earth's surface
  8. 13. layer of rock that forms earth's outer surface
  9. 14. theory that pieces of earth's lithosphere are in motion
  10. 17. section of lithosphere that slowly move over atmosphere
  11. 20. geologist who discovered sea floor spreading by sonar