Earthquakes

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Across
  1. 1. wave that travels around the earths surface
  2. 5. instrument used to detect and record earthquakes
  3. 8. large seawave produced by seaquakes
  4. 9. the two sub-layers of the earths crust that move, float and fracture
  5. 11. blocks of rock on either side of the fault slide horizontally
  6. 13. earths crustal plates moving together
  7. 14. earths crustal plates result in one plate being drawn down
  8. 15. instrument used to measure the tilt of earths surface
Down
  1. 2. a small earthquake or tremor that follows a major earthquake
  2. 3. inclined fractures where the blocks have shifted vertically
  3. 4. a scale that enable seismologists to compare energy from earthquakes
  4. 6. a violent shaking of the earth
  5. 7. a type of strike slip fault
  6. 10. a scientist that studies earthquakes
  7. 12. tectonic boundary where two plates move away from each other