Earthquakes and Volcanoes

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Across
  1. 4. a deep canyon on the ocean floor
  2. 9. The process by which oceanic crust sinks beneath a deep-ocean trench and back into the mantle at a convergent plate boundary
  3. 10. The layer of rock that forms the Earth's outer surface
  4. 12. a plate boundary where two plates grind into eachother sending eachother into different directions
  5. 14. a plate boundary where two plates move toward eachother
  6. 15. a German Scientist who made a theory that Earth had once just had one big land mass but had drifted apart
Down
  1. 1. a plate boundary where two plates move away from eachother
  2. 2. what causes the place to move between the lithosphere and asthenosphere
  3. 3. the processby which molten material adds new oceanic crust to the ocean floor
  4. 5. an underwater mountain that produces the ocean floor; also a plate boundary
  5. 6. A break or crack in the Earth's lithosphere along which rocks move
  6. 7. dense ball at the center of earth
  7. 8. a layer of molten iron and nickel that surrounds the inner core of the Earth
  8. 11. the big land mass that was split up into seven continents around 225 million years ago
  9. 13. the thickest layer of earth that includes two layers, the lithosphere and asthenosphere