Plate Tectonic Vocabulary

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Across
  1. 6. boundary between two tectonic plates moving away from each other
  2. 7. the mineralized remains of organisms
  3. 11. upper layer of the earth's mantle, below the lithosphere, in which current convection occurs
  4. 12. huge pieces of crust that slowly move on the upper ductile part of the mantle
  5. 14. an underwater mountain system formed by plate tectonics
  6. 15. melted or molten rock material beneath earth's surface
  7. 16. deep and narrow depression in the seafloor where the subducted plate moves into the asthenosphere
Down
  1. 1. very hot, very dense center of earth
  2. 2. the solid layer of earth between the crust and the core
  3. 3. rigid outer layer of the earth that is made of loosely connected solid plates that float on top of the asthenosphere
  4. 4. a depression of earth's surface in which an ocean lies
  5. 5. the process in which a denser plate is pushed downward beneath a less dense plate when plates converge
  6. 8. a parallel pattern of rock material found at identical locations on each side of the mid-atlantic ridge reveals rock of the same geologic age and poarity
  7. 9. boundary that occurs when two tectonic plates move toward each other and collide
  8. 10. the thin, solid, outermost layer of earth
  9. 13. the theory that continents were once connected but drifted apart