Plate Tectonics

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Across
  1. 4. center of the earth
  2. 6. substance's mass per unit of volume
  3. 8. thickest earth layer
  4. 11. large scale processes that affect the earths crust
  5. 12. An area of fracturing between rocks resulting from stress
  6. 13. the amount of force pushing on a surface
  7. 14. uppermost layer of the oceanic plates
  8. 16. a vibration that travels through earth
  9. 17. region of the upper mantle of earth
  10. 19. two tectonic plates pushing away from each other
Down
  1. 1. thinnest earth layer
  2. 2. two tectonic plates colliding
  3. 3. geological process in which the oceanic lithosphere and some continental lithosphere is recycled into the Earth's mantle at convergent boundaries.
  4. 4. features expressed on the surface
  5. 5. Rigid, outermost rocky shell
  6. 7. science that deals with the earth's physical structures
  7. 9. two tectonic plates sliding past each other
  8. 10. the transfer of heat energy by fluid
  9. 15. piece of the lithosphere that moves on the asthenosphere
  10. 18. supercontinent that existed during the late Paleozoic and early Mesozoic eras