Earthquakes

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Across
  1. 1. What makes up 1% of our planet?
  2. 4. The maximum height of a wave crest or depth of a trough.
  3. 8. volcano A volcano that is not expected to erupt again.
  4. 9. the area with the most active volcanos in the world
  5. 12. drift the theory of country moving
  6. 15. scale how an earthquake is measured
  7. 18. the vibration following an earthquake
  8. 20. the very centre of the earth
Down
  1. 2. A massive wave caused by an earthquake
  2. 3. the place on the earths surface from where a earthquake originates
  3. 5. wave these are the fastest body waves
  4. 6. the outmost layer of the earth
  5. 7. drift the theory about the movement between the Earth's continents.
  6. 10. Vibration caused by movement of tectonic plates
  7. 11. rock The bit between the crust and core
  8. 13. a volcano releases ____.
  9. 14. A small tremor that happens, then followed by a larger earthquake or main shock.
  10. 16. boundary tectonic plates move beside each other
  11. 17. fault when plates are moved in the most common way
  12. 19. A type of plate the makes up the earths crust