l>Waves
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Waves

There are three varieties of waves that are produced when stress and anxiety is exit as energy in earthquakes: P, S, and also surface waves. The P wave, or main wave, is the faster of the three waves and also the very first detected by seismographs. They are able to move through both liquid and solid rock. Ns waves, prefer sound waves, space compressional waves, which means that castle compress and also expand matter as they move through it. S waves, or an additional waves, space the waves directly following the p waves. As they move, S tide shear, or reduced the rock they travel with sideways at ideal angles come the direction the motion. S tide cannot travel with liquid because, when liquid deserve to be compressed, that can"t shear. S waves room the much more dangerous kind of waves because they are larger than ns waves and produce vertical and also horizontal motion in the floor surface. Both P and S tide are dubbed body-waves since they move within the Earth"s interior. Your speeds vary depending upon the density and also the elastic properties of the material they happen through, and also they are amplified as they with the surface. The third form of wave, and the slowest, is the surface wave. This waves move close to or top top the external surface of the ground.


You are watching: Which seismic waves compress and expand rocks in the direction the waves travel?


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There space two types of surface waves: Love waves, that move like S waves but only horizontally, and also Rayleigh waves, that relocate both horizontally and also vertically in a vertical plane pointed in the direction the travel.

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