EARTH SCIENCE
EARTHQUAKES
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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2
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5
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10
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100
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Detailed explanation-1: -On the so-called Richter scale, a magnitude 8 on a seismogram was 10 times bigger than a magnitude 7.
Detailed explanation-2: -While each whole number increase in magnitude represents a tenfold increase in the measured amplitude, it represents an 32 times more energy release.
Detailed explanation-3: -Richter Scale However, the energy released by a seismic wave is 101.5 (or about 31.6x) the amount of its amplitude, meaning that a 7.0 quake releases 31.6 times more energy than a 6.0 quake, or 1, 000 times more energy than a 5.0 quake.
Detailed explanation-4: -The magnitude scale is logarithmic. That just means that if you add 1 to an earthquake’s magnitude, you multiply the shaking by 10. An earthquake of magnitude 5 shakes 10 times as violently as an earthquake of magnitude 4; a magnitude-6 quake shakes 10 times as hard as a magnitude-5 quake; and so on.
Detailed explanation-5: -An M6. 0 is 1, 000 times bigger than an M3.