GK
GENERAL SCIENCE
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Which of the following best describes aftershocks?
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giant ocean waves that originate at a fault zone
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seismic waves that cannot travel through liquids
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areas along a fault where slippage and fracturing first occur
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series of small tremors occurring after a major earthquake
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Explanation:
Detailed explanation-1: -Answer: A. A series of tremors occurring after a major earthquake.
Detailed explanation-2: -An aftershock results from the sudden change in stress occurring within and between rocks and the previous release of stress brought on by the principal earthquake. Aftershocks occur in rocks located near the epicentre or along the fault that harboured the principal quake.
Detailed explanation-3: -An aftershock has the following characteristics. [1] The number of aftershocks will be most immediately after the occurrence of main-shock but will gradually decrease over time. The number of aftershocks will decrease to approximately the one-tenth in 10 days whereas one-hundredth in 100 days.
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