Plate Tectonics

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Across
  1. 2. layer of rock between the crust and core
  2. 5. hypothesis that states that the continents once formed a single land mass
  3. 7. soft layer of the mantle on which the tectonic plates move
  4. 9. set of deep cracks that form between two tectonic plates
  5. 12. where sea floor spreading takes place
  6. 16. boundary formed by collision of two lithospheric plates
  7. 18. theory that explains how large pieces of the earth's outermost layer
  8. 21. boundary between two tectonic plates
  9. 22. rim of volcano
Down
  1. 1. thin and solid outermost layer of the earth above the mantle
  2. 2. strong lower part of the mantle between the asthenosphere and outer core
  3. 3. fault when rocks are pulled apart because of tension
  4. 4. earth's magnetic poles change places
  5. 6. stress occurs when forces act to stretch an object
  6. 8. bending of rock layers due to stress
  7. 10. solid outer layer of the earth that consists of the crust and the rigid upper part of the mantle
  8. 11. block of lithosphere that consists of the crust and rigid outermost part of the mantle
  9. 13. fault when rocks are pushed together by compression
  10. 14. central part of the earth below the mantle
  11. 15. rising regions of earth's crust to higher elevation
  12. 17. boundary between two tectonic plates sliding past each other horizontally
  13. 19. stress occurs when forces act to squeeze an object
  14. 20. sinking of regions of earth's crust to lower elevation
  15. 23. break in a body of rock where one rock slides relative to another