Earthquakes & Natural Disasters

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Across
  1. 2. earth's outer core is in what state of matter?
  2. 5. large wave caused by a displacement
  3. 8. a surface wave that zig-zags
  4. 11. a surface wave that causes a rolling motion
  5. 12. the term when using three seismographs to locate the epicenter of an earthquake
  6. 13. a sudden and violent shaking of the ground usually due to earth's crustal movement
  7. 16. how does the moment magnitude scale rank an earthquake
  8. 17. the "bouncing" of s-waves at earth's outer core
  9. 20. a modified scale designed to describe the effects of an earthquake.
Down
  1. 1. an instrument that measures and records earthquakes
  2. 3. a body wave that is follows the p-wave
  3. 4. the fastest body wave
  4. 6. the zone where earth does not receive seismic waves
  5. 7. the source of an earthquake underground
  6. 9. the location of an earthquake on the surface
  7. 10. earthquakes occur most frequently along which plate boundary?
  8. 14. a scale based on damage
  9. 15. the size or intensity of an earthquake
  10. 18. the "bending" of p-waves through earths layers
  11. 19. a fracture in the ground