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2016-07-06T18:12:48+08:00
Characteristics of P-Waves are:
  it is a pulse energy that travels quickly through the Earth and other liquids. 
 it travels faster than S-Waves
 Also called compressional waves 
 travel by particles vibrating parallel the wave direction travel
 forces ground to move backward and forward as they are compresssed and expanded
 travel through solids, liquids, and gases
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