GEOLOGY

Detailed explanation-1: -The Modified Mercalli scale rates the amount of damage from an earthquake. To locate the epicenter of an earthquake, geologists need data from two or more seismographs. In a seismograph, seismic waves cause the drum to vibrate. On a seismogram, higher lines drawn in the paper indicate weaker seismic waves.

Detailed explanation-2: -The Modified Mercalli scale measures the earthquake’s effect on people, property and ground damage. Roman numerals are used to rate the intensity and damage. An earthquake may have a different intensity rating at different locations. Damage is usually lessened with distance from the earthquake’s epicenter.

Detailed explanation-3: -Note: The Modified Mercalli scale is designed to describe the effects of an earthquake, at a given place, on natural features, on industrial installations and on human beings. The intensity differs from the magnitude which is related to the energy released by an earthquake.

Detailed explanation-4: -Although numerousintensity scales have been developed over the last several hundred years to evaluate the effects of earthquakes, the one currently used in the United States is the Modified Mercalli (MM) Intensity Scale. It was developed in 1931 by the American seismologists Harry Wood and Frank Neumann.

Detailed explanation-5: -The Mercalli Intensity Scale measures the intensity of an earthquake by observing its effect on people, the environment and the earth’s surface. The Richter Scale measures the energy released by an earthquake using a seismograph.