Review

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Across
  1. 4. one large continent that existed long ago
  2. 6. land feature made by divergence
  3. 9. happen at transform boundaries
  4. 11. large piece of Earth's crust
  5. 12. plates that move away from each other
  6. 16. land feature made by convergent plates
  7. 17. land feature formed by oceanic and land plates
  8. 18. plates that come together
Down
  1. 1. the shock waves produced by earthquakes
  2. 2. major land masses
  3. 3. hot melted rock from inside the Earth
  4. 5. magma that has reached Earth's surface
  5. 7. a volcano that is erupting often
  6. 8. a place where Earth's crust has split
  7. 10. plates that slide past each other
  8. 13. the place where an earthquake began
  9. 14. a volcano that will not erupt again
  10. 15. a volcano that has not erupted for many years