Earthquakes and Volcanoes Crossword

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Across
  1. 5. A rigid layer made up of the uppermost part of the mantle and the crust
  2. 8. A plate boundary where two plates move toward each other
  3. 13. A plate boundary where two plates move away from each other
  4. 15. Cause the plates to move; between the lithosphere and the asthenosphere
Down
  1. 1. A plate boundary where two plates grind against each other, moving it different directions
  2. 2. A layer of molten iron and nickel that surrounds the inner core of the Earth
  3. 3. A soft layer of the mantle on which the lithosphere floats
  4. 4. Alfred Wegener's hypothesis that the continents were once one huge land mass but have since then drifted apart
  5. 6. A break or crack in the Earth's lithosphere along which rocks move
  6. 7. the layer of rock that forms the Earth's outer surface
  7. 9. The name of the single landmass that broke apart about 225 million years ago
  8. 10. The undersea mountain mountain chain where new ocean floor is produced; a divergent plate boundary
  9. 11. A deep canyon on the ocean floor
  10. 12. thickest layer of the Earth; it consists of two layers - the lithosphere and the asthenosphere
  11. 14. Dense ball of solid material at the center of he Earth