EARTH SCIENCE
EARTHQUAKES
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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P Waves
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S Waves
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Surface Waves
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None of the above
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Detailed explanation-1: -They are transverse waves, which means that the particle motion is at right angles to the direction of travel.
Detailed explanation-2: -Both P and S waves travel outward from an earthquake focus inside the earth. The waves are often seen as separate arrivals recorded on seismographs at large distances from the earthquake.
Detailed explanation-3: -S-waves, also known as secondary waves, shear waves or shaking waves, are transverse waves that travel slower than P-waves. In this case, particle motion is perpendicular to the direction of wave propagation.
Detailed explanation-4: -An S body wave (secondary body wave) is only about half as fast as a P wave and causes the rock to vibrate at right angles to the direction of wave travel (Figure 2). Both P and S waves can travel through solid rock, but only P waves can pass through a fluid medium.
Detailed explanation-5: -P-waves shake the ground in the direction they are propagating, while S-waves shake perpendicularly or transverse to the direction of propagation (i.e. they displace material at right angles to their path).