What is earthquake? Earthquake in Nepal.

                     Earthquake in Nepal (Sundhara ,kathmandu)

EARTHQUAKE

An earthquake is disturbances set off by sudden release of elastic strain. It is also simply known as a shaking of ground by kinetic energy as different waves travels through earth’s materials. It is the devastating effort of nature. Due to the development of rupture surface because of compressing forces obtain from plate movements results this energy mainly. About 90% of the all earthquake occurred from tectonic events while the remaining 10% are resulted from volcanism, collapse of subterranean cavities or human activities.

The point or area within the earth where this energy is first initiated is known as focus. The point or area on the surface of the earth directly above the focus is called epicenter. During the occurrence of earthquake there will be release of high amount of accumulating strain. However, in many cases the accumulating strain is partially released locally as small earthquakes is known as foreshocks which is an indicator the strain energy is building up to the rupture level and larger earthquake is about to happen.

Most of the stored energy released, when an earthquake occurs. However, after the large earthquake there may be numerous less shocks known as aftershocks for weeks or months. Some of the earthquake is comparable in size to the main earthquake. Its energy is recorded in graph is called seismograph. Seismogram is the instrument to measure its energy released.

Earthquake is one of the destroying natural agent due to which causes loss of life, property harmony, peace, etc. We can escape from its effects by making the flexible spring stored houses , alert, housing style, etc.