Extra Credit

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Across
  1. 3. where two plates collide
  2. 6. Melted rock that reaches the surface
  3. 7. when plates slide past each other
  4. 8. the outermost solid layer of earth
  5. 12. sudden shaking of the ground
  6. 13. when one plate sinks beneath another
  7. 14. type of rock formed from cool magma
Down
  1. 1. Rigid pieces of earth's crust
  2. 2. melted rock beneath Earth's surface
  3. 4. a mountain that can erupt
  4. 5. theory that explains how earths plates move
  5. 9. boundary where plates move apart
  6. 10. blocks large chunks of crust that move along faults
  7. 11. wavy bends in earths crust caused by pressure