plate tectonic by: Alyssa Dunkin

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Across
  1. 1. the ability or tendency to float in water
  2. 4. peices of crushed up rock
  3. 7. a thin lithospheric plate made of basalt that makes the ocean floor
  4. 10. peices of the earths lithosphere move over the asthenosphere
  5. 12. vibration that travel through the world
  6. 13. the thickest layer of the earth
  7. 15. a part of the lithosphere ad moves on top of the asthenossphere
  8. 16. a person who uses physical principals to study the earth
  9. 18. the degree of compactness of a substance
  10. 19. a landmass decomposed over a log time
  11. 20. when two plates come together
Down
  1. 2. it lies between the upper mantle
  2. 3. the thought that continents moved around the earths surface
  3. 5. the hottest layer of the earth
  4. 6. a thick lithospheric plate made of andesite and granite
  5. 8. the liquid core
  6. 9. when two plates move apart
  7. 11. when lithospheric plates sink to the mantle
  8. 14. it detects and predicts seismic waves
  9. 17. a mountai that erupts with lava