Different types of seismic waves.
Answers
Answer:
There are two broad classes of seismic waves: body waves and surface waves. Body waves travel within the body of Earth. They include P, or primary, waves and S, or secondary, waves.
P waves cause the ground to compress and expand, that is, to move back and forth, in the direction of travel. They are called primary waves because they are the first type of wave to arrive at seismic recording stations. P waves can travel through solids, liquids, and even gases.
S waves shake the ground in a shearing, or crosswise, motion that is perpendicular to the direction of travel.
These are the shake waves that move the ground up and down or from side to side. S waves are called secondary waves because they always arrive after P waves at seismic recording stations. Unlike P waves, S waves can travel only through solid materials.
After both P and S waves have moved through the body of Earth, they are followed by surface waves, which travel along Earth’s surface. Surface waves travel only through solid media. They are slower-moving than body waves but are much larger and therefore more destructive.
The two types of surface waves are named Love waves and Rayleigh waves, after the scientists who identified them.
Love waves have a horizontal motion that moves the surface from side to side perpendicular to the direction the wave is traveling. Of the two surface waves, Love waves move faster.
Rayleigh waves cause the ground to shake in an elliptical pattern. This motion is similar to that observed in ocean waves. Of all the seismic waves, Rayleigh waves spread out the most, giving them a long duration on seismograph recordings.
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Answer:
The two main types of waves are body waves and surface waves. Body waves can travel through the Earth's inner layers, but surface waves can only move along the surface of the planet like ripples on water. Earthquakes send out seismic energy as both body and surface waves.
Love Waves—surface waves that move parallel to the Earth's surface and perpendicular to the direction of wave propagation..
P-wave Motion. P-wave:the primary body wave; the first seismic wave detected by seismographs; able to move through both liquid and solid rock. ...
S-wave Motion. ...
Rayleigh-wave Motion. ...
Love-wave Motion.
There are three basic types of seismic waves – P-waves, S-waves and surface waves. P-waves and S-waves are sometimes collectively called body waves.
Explanation:
Types
Body waves travel through the interior of the Earth.
Surface waves travel across the surface. Surface waves decay more slowly with distance than body waves which travel in three dimensions.
Particle motion of surface waves is larger than that of body waves, so surface waves tend to cause more damage.