Earthquakes and Volcanoes CrossWord Puzzle.

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Across
  1. 3. Theory that pieces of the Earth's lithosphere are in motion,driven by convection currents in the mantle
  2. 4. A huge mountain built with Magma.
  3. 5. A soft layer of the mantle on which the lithosphere floats
  4. 9. A plate boundary where two plates grind against each other, moving it different directions
  5. 12. A layer of molten iron and nickel that surrounds the inner core of the Earth
  6. 13. The layer of rock that forms the Earth's outer surface
  7. 15. German Scientist who developed the Theory of the Continental Drift in 1912.
  8. 16. The name of the single landmass that broke apart about 225 million years ago
Down
  1. 1. The undersea mountain mountain chain where new ocean floor is produced; a divergent plate boundary
  2. 2. A plate boundary where two plates move toward each other
  3. 6. The process by which oceanic crust sinks beneath a deep-ocean trench and back into the mantle at a convergent plate boundary
  4. 7. The layer of rock that forms the Earth's outer surface
  5. 8. Causes cracks in the ground, also causes tsunamis.
  6. 10. A break or crack in the Earth's lithosphere along which rocks move
  7. 11. A deep valley where two plates move apart
  8. 14. A deep canyon on the ocean floor