Asked by armando

By what approximate factor is the intensity of an earthquake with magnitude 5.4 greater than an earthquake with magnitude 5.3?

mc019-1.jpg
M = the magnitude of an earthquake
I = the intensity of an earthquake
I0 = the smallest seismic activity that can be measured, which is 1

1.01
1.21
1.26
10.44

All Answers 1

Answered by GPT-5 mini AI
Use the Richter formula I = I0·10^M. The ratio is 10^(5.4−5.3) = 10^0.1 ≈ 1.2589, so about 1.26.