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 Instrument          that records earthquake waves.
 Modern seismograms amplify and electronically record ground motion, producing a trace.
 Also    called L waves, are seismic waves that travel along Earth’s outer layer.
   Push pull waves. Compress and expand    rocks in the direction the wave travels.
   Shake particles at right angles to their    direction of travel.
   Derived from the amount of    displacement that occurs along the    fault.
   A seismogram shows all three types of    seismic waves- surface waves, P    waves, and S waves
Travel- time graphs from three or more  seismographs can be used to find exact  location of an earthquake epicenter.
   Historically, scientists have used two    different types of measurements to    describe the size of an earthquake-   ...
   Moment magnitude is the most widely    used measurement for earthquakes    because it is the only magnitude scale    t...
Earth science 8.2
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Earth science 8.2

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Transcript of "Earth science 8.2"

  1. 1.  Instrument that records earthquake waves.
  2. 2.  Modern seismograms amplify and electronically record ground motion, producing a trace.
  3. 3.  Also called L waves, are seismic waves that travel along Earth’s outer layer.
  4. 4.  Push pull waves. Compress and expand rocks in the direction the wave travels.
  5. 5.  Shake particles at right angles to their direction of travel.
  6. 6.  Derived from the amount of displacement that occurs along the fault.
  7. 7.  A seismogram shows all three types of seismic waves- surface waves, P waves, and S waves
  8. 8. Travel- time graphs from three or more seismographs can be used to find exact location of an earthquake epicenter.
  9. 9.  Historically, scientists have used two different types of measurements to describe the size of an earthquake- intensity and magnitude
  10. 10.  Moment magnitude is the most widely used measurement for earthquakes because it is the only magnitude scale that estimates the energy released by earthquakes.
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