A seismic wave is an elastic wave generated by an impulse such as an earthquake or an explosion.
Seismic waves are wavesof energy that travel through the earth, for example as a result of an earthquake explosion, or some other process that imparts low-frequency acoustic energy.
The P waves move in a compressional motion similar to the motion of a slinky, while the S waves move in a shear motion perpendicular to the direction the wave is travelling.
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