Question

What instrument is used to measure the magnitude of earthquake .?

Answer 1

seismometer is used to measure the magnitude of the earth quake.

hope it helps!!

Answer 2

The Richter scale is used to measure the magnitude of an Earthquake.

• The Richter magnitude scale (also known as the Richter scale) offers a numerical value to an earthquake's energy output. The Richter scale is a base-10 logarithmic scale invented by Richter in the 1930s. Magnitude is defined as the logarithm of the ratio of seismic wave amplitude to an arbitrary, minor amplitude.

• An earthquake that registers 4.0 on the Richter scale has a shaking amplitude 10 times that of an earthquake that registers 3.0, corresponding to a release of energy 31.6 times that of the weaker earthquake, as measured by a seismometer.