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Seismic Waves Vocab

Review vocabulary about seismic waves

TermDefinition
Body Wave A seismic wave that moves through the interior of the earth.
Earthquake A term used to describe ground shaking and radiated seismic waves.
P-Wave A seismic wave that shakes the ground back and forth (compression) in the direction the wave is moving
Surface Wave A seismic wave that moves through the crust of the earth.
Seismograph The instrument that records vibrations in the ground.
Seismogram A tracing of earthquake motion.
Seismic refraction When seismic waves change velocity and direction when they enter a medium of different density than the one they just passed through.
Seismic reflection When seismic waves bounce off rock boundaries of different rock type.
Seismologist The person that studies and measures earthquake motion and vibrations.
Mohorovicic discontinuity The distinct boundary between the crust and the mantle where seismic waves are refracted.
Shadow zone An area on Earth’s surface where no direct seismic waves from an earthquake can be detected.
Created by: rswatson
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