Causes of earthquke?

@bololobo (177)
Thailand
October 16, 2010 9:28pm CST
I've been heard about many earthquakes in the world. But I don't really know the true causes of each earthquake. Can any one explain me ?
1 response
@incus99 (1083)
• Philippines
17 Oct 10
Earthquakes are usually caused by the drastic movement of the Earth's crust.. this caused by a volcanic explosion or a moving fault line (caused by sliding Tectonic Plates).. most of the time, earthquakes are caused by nature .. although man can induce one if plans to interfere with nature.