Earth Science Chapter 6 EARTHQUAKE!

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Across
  1. 3. a crack in a rock layer
  2. 6. the last wave to arrive at the seismic station; also called a surface wave
  3. 7. a force that builds in strength and intensity before an earthquake occurs
  4. 9. the area between tectonic plates that are moving toward or into each other
  5. 11. forces acting on an object in different or opposing directions
  6. 13. a force in liquids that allows certain substances to float
  7. 14. a contact force that squeezes or crushes an object
  8. 16. the area between two tectonic plates which are sliding past each other parallel to the fault
  9. 18. the point on the earth's surface directly above the focus of an earthquake
  10. 19. the secondary, or slower moving wave generated by an earthquake
Down
  1. 1. the primary, or fastest wave generated by the earthquake
  2. 2. the area between tectonic plates which are moving away from each other
  3. 4. an instrument that detect movements of the earth
  4. 5. the scale which rates the intensity of an earthquake's magnitude
  5. 8. the study of earthquakes and the waves they generate
  6. 10. the origin of an earthquake located deep within the earth
  7. 12. any number of seismic waves that travel on and through the earth
  8. 15. a crack in a rock layer along which there has been movement
  9. 16. a large tidal wave generated by an earthquake in the ocean or along the shore
  10. 17. a contact force that stretches or pulls an object apart