Plate tectonics

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Across
  1. 2. a cucumber that is put into a briny solution
  2. 5. how dense a object is
  3. 6. this idea came up 30 years after a scientist died
  4. 8. a place where two convergent plates collide
  5. 10. a plate boundary that often causes earthquakes
  6. 11. a plate boundaries where two plates converge
  7. 12. a hamburger can also be a ________
Down
  1. 1. the scientist who came up with continental drift
  2. 3. a plate boundary where two plates diverge
  3. 4. a theory proposed by a scientist who died in Greenland while proving this
  4. 7. the movement of air or fluids due to heat
  5. 9. the largest rodent in the world