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FBES78- Seismic Waves

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Reese Jones

on 10 March 2011

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Transcript of FBES78- Seismic Waves

Seismic Waves There are three types of seismic waves! Primary Waves Also known as P waves. They travel through solids, liquids, and gases. Depending on the density of the earth they are moving through, the speeds vary dramatically.
They are also push-pull waves, as they travel they compress rock particles into each other as they push them. Secondary Waves Also known as S waves, arrive at a given point after primary waves do. S waves travel through solids, but not liquids or gases. Like P-waves, S-waves speed up when they pass through denser material. Surface Waves The slowest moving seismic wave, also known as L waves Arrive at given point after P and S waves, they move along the earth's surface like waves do across the ocean. Surface Waves cause most damage because they bend and twist the earth's surface. Produced By: Reese Jones Assisted by my Science Book! Seismic wave video.
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