GEOLOGY

Detailed explanation-1: -The magnitude of an earthquake is measured by an instrument called seismograph.

Detailed explanation-2: -The Richter magnitude of an earthquake is determined from the logarithm of the amplitude of waves recorded by seismographs. Adjustments are included for the variation in the distance between the various seismographs and the epicenter of the earthquakes.

Detailed explanation-3: -A device called a seismograph can be used to measure the magnitude of any earthquake.

Detailed explanation-4: -The Richter scale is used to rate the magnitude of an earthquake, that is the amount of energy released during an earthquake. On the other hand, a seismograph is an instrument used to detect and record seismic waves.

Detailed explanation-5: -Seismograph is the instrument that records the tremors of an earthquake. This instrument also helps seismologists to map the interior of the Earth.