Question

Richter defined the magnitude of an earthquake to be M = log I/S , where I 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. The magnitude of a standard earthquake is M = log S/S =

Answer 1

0

Explanation:

Answer 2

Richter Scale is used to measure the Intensity of Earthquake.

The Intensity of Earthquake lies between 2 to 10.

An Earthquake of intensity 7 is very harmful and intensity of 8 can destroy everything around that area.

An earthquake of intensity 8 is 100 times more powerful than earthquake of intensity 6, because it has base of 10 in it's Logarithm.

→→Magnitude of an earthquake to be
`M = log_(10) I/S` , where I is the intensity of the earthquake (measured by the amplitude of the seismograph wave) and S is the intensity of a “standard” earthquake.

As, to find the magnitude of Standard earthquake,

Then , I=S

`M=log_(10)(S)/(S)\\\\M=log_(10)(1)\\\\ M=0, as log_(10)(1)=0`

So, M=0→→ Magnitude of a standard earthquake