On the 8th of October,2005, an earthquake measuring 7.6 on the Ritcher scale hit the Pakistan controlled area. About 70,000 people were confirmed dead and about 3 million others rendered homeless.
An earthquake is defined as a violent tremor in the earth crust which sends out a series of vibrating waves in all directions.
Earthquake occur as a result of disturbances or movements within and below the earths crust, especially where there are fault or fractures.For some reasons,stresses are built up within the earths crust. When a certain point tension or intensity is reached or attained, cracks or slips occurs within the earths crust. This produces the shock effect that sends out the vibrations.
The intensity of an earthquake depends on :
~the amount of shift, that is, crustal displacement or movement along a fault.
~the size of the rock mass involved in the movement or displacement.
