Question

What do you mean by earthquake? Or, Definition of earthquake?

Answer 1

Earthquake : The sudden tremors or shaking of the earth's crust is called an earthquake.

• When a part of the earth's surface moves backward and forward or up and down, the earth's surface 'quakes', and these are called the 'earthquake'.
• The earth's crust is made up of different parts of various sizes. They are called plates. Most of the earthquakes in the world are caused by the movements of the plates (Tectonism).
• Seismology the specialbranch of Geology, It deals with the study ofearthquake.
• Richter scale and 'Mercalli scale' are the instruments to measure/record the magnitude and the intensity of an earthquake respectively.