GEOLOGY

EARTH SCIENCE

EARTHQUAKES

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
How much stronger is a magnitude 7 earthquake compared to magnitude 6 quake on the Moment Magnitude Scale?
A
2 times stronger
B
20 times stronger
C
32 times stronger
D
1, 000 times stronger
Explanation: 

Detailed explanation-1: -For each whole-number increase in magnitude, the seismic energy released increases by about 32 times. That means a magnitude 7 earthquake produces 32 times more energy-or is 32 times stronger-than a magnitude 6.

Detailed explanation-2: -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-3: -A magnitude 7 earthquake has been described by seismologists as having “an energy equivalent to around 32 Hiroshima atomic bombs, ” as Renato Solidum, the director of the Philippine Institute of Volcanology and Seismology, told The Times in 2013.

Detailed explanation-4: -Essentially, each successive magnitude is 33 times larger than the last. That means a magnitude-8.0 earthquake is 33 times stronger than a 7.0, and a magnitude-9.0 earthquake is 1, 089 (33 x 33) times more powerful than a 7.0-the energy ramps up fast.

Detailed explanation-5: -Answer and Explanation: The magnitude 7 earthquake is approximately 1000 times stronger than magnitude 4 earthquake.

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