Question

The magnitudes of two earthquakes, A and B, on the Richter Scale, were 7
and 5, respectively. The strength of-
1.earthquake A is 100 times that of earthquake B.
2.earthquake A is 10 times that of earthquake B.
3.earthquake A is 2 times that of earthquake B.
4.earthquake A is 1/10 times that of earthquake B.​

Answer 1

Answer:

Option A is right

The difference between the two magnitude of earthquakes is 2.(7-5).

So if in the ritcher scale the magnitude increases two times the strength will be 100 times

Answer 2

Answer:

The strength 1. Earthquake A is 100 times that of earthquake B.

Explanation:

The earthquake A with magnitude 7 is 100 times stronger than earthquake B with the magnitude of 5. It is because of the fact that each expansion of 1 in the seismic tremor quality scale compares to an increment by a factor of 10 in the quality of the quake.

When we compare the seismic value 5 and 7, it is clear that the value is having difference of 2. Thus, we get the factor as $10^2$ and thus the value is 10 × 10 = 100. Hence, it is inferred that earthquake A is 100 times that of earthquake B.