EARTH SCIENCE
SEISMOLOGY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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They are faster than surface waves.
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They can travel through all states of matter
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They shear rock back and forth or side to side.
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They can be used to located epicenters.
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Detailed explanation-1: -4. Which of the following statements is NOT true of S waves? They cannot travel through gases.
Detailed explanation-2: -S-waves can only move through solids. This is because liquids and gases don’t resist changing shape. P-waves and S-waves are the two types of body waves.
Detailed explanation-3: -S-waves cannot travel through liquids. When they reach the surface they cause horizontal shaking. Liquids don’t have any shear strength and so a shear wave cannot propagate through a liquid. Think of a solid material, like a rock.
Detailed explanation-4: -They are transverse waves, which means that the motion is perpendicular to the direction of wave propagation. S waves can only travel through solids, and scientists have successfully mapped the earth’s interior by studying the routes of these waves.