An earthquake, one of the most destructive natural phenomena, consists of rapid vibrations of rock near the surface of the earth. It is the most terrifying of all natural phenomena and has brought fear since ancient times because of its sudden unpredictable occurrence and enormous capacity of destruction. A single shock usually last no more than a few seconds, although several quakes may last for as much as a couple of minutes. We have to know what earthquakes are in order for us to be prepared against them. Earthquakes are tremors that move the earth. They can create a lot of damage. The main damage is caused to human, animal life and damage to properties. Earthquakes cause a lot of devastation, thereby causing great loss of life and property.