Question

chilean quake's richter magnitude: 8.5
taiwan earthquake's richter magnitude: 7.6

about how much more energy was released by the chilean quake than the taiwan earthwquake?

a. twice as much
b. ten times as much
c. thirty two times as much
d. one thousand times as much

i think it's d.

Answer 1

They are in the powers of base 10. Thus a magnitude of 2 is 10 times as great as 1. Does this help?

Thanks for asking.

Answer 2

the answer is B