Plate Techtonics

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Across
  1. 6. A break or crack in the Earth's lithosphere along which rocks move
  2. 7. A plate boundary where two plates move toward each other
  3. 9. A deep canyon on the ocean floor
  4. 10. German Scientist who developed the Theory of the Continental Drift in 1912
  5. 11. A plate boundary where two plates grind against each other, moving it different directions
  6. 13. the thickest layer of the earth
  7. 14. The process by which oceanic crust sinks beneath a deep-ocean trench and back into the mantle at a convergent plate boundary
  8. 15. A soft layer of the mantle on which the lithosphere floats
Down
  1. 1. A deep valley where two plates move apart
  2. 2. The name of the single landmass that broke apart 225 million years ago
  3. 3. What happens when two plates rub together.
  4. 4. Dense ball of solid material at the center of the Earth
  5. 5. A rigid layer made up of the uppermost part of the mantle and the crust
  6. 8. A layer of molten iron and nickel that surrounds the inner core of the Earth
  7. 12. A plate boundary where two plates move away from each other