GENERAL GEOLOGY

Detailed explanation-1: –Richter scale (log scale) is used to measure the energy released by earthquakes. Q.

Detailed explanation-2: -Answer and Explanation: The energy typically released in an earthquake is kinetic energy, thermal energy and sound energy. The kinetic energy associated with an earthquake is due to the movement of the ground. The thermal energy comes from the friction force that exists in the fault.

Detailed explanation-3: -Magnitude is a measure of the amount of energy released during an earthquake. It is frequently described using the Richter scale. To calculate magnitude, the amplitude of waves on a seismogram is measured, correcting for the distance between the recording instrument and the earthquake epicentre.

Detailed explanation-4: -It was invented in 1935 by Charles F. Richter of the California Institute of Technology as a mathematical device to compare the size of earthquakes. The Richter scale is used to rate the magnitude of an earthquake, that is the amount of energy released during an earthquake.

Detailed explanation-5: -Magnitude is proportional to the energy released by an earthquake at the focus. It is calculated from earthquakes recorded by an instrument called seismograph. It is represented by Arabic Numbers (e.g. 4.8, 9.0).