A seismic wave is a wave that travels through the Earth, most often as the result of a tectonic earthquake, sometimes from an explosion.
There are two types of seismic wave, namely, 'body wave' and 'surface wave'.
There are two kinds of body waves: primary (P-waves) and secondary (S-waves).
Surface waves are analogous to water waves and travel just under the Earth's surface.
They travel more slowly than body waves.
For more information about the topic Seismic wave, read the full article at Wikipedia.org, or see the following related articles:
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