The magnitude, M, of an earthquake is defined to be
, where / is the intensity of the earthquake (measured by the
amplitude of the seismograph wave) and S is the intensity of a "standard" earthquake, which is barely detectable. What is the
magnitude of an earthquake that is 35 times more intense than a standard earthquake? Use a calculator. Round your answer to
the nearest tenth.
-1.5
-0.5
1.5
3.6

1.5

Step-by-step explanation:

The magnitude, M, of an earthquake is defined to be

M = log l/s

where I is the intensity of the earthquake and s is the intensity of a “standard” earthquake.

If an earthquake that is 35 times more intense than a standard earthquake, then l/s = 35. Replacing it in the equation:

M = log 35  = 1.5

you probably already have the answer but anyways it's b. 15.0

step-by-step explanation: