Why+do+EarthQuakes+Occur+??

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 * The shaking of the earth caused by a sudden shifting of rocks below its surface, is called an earthquake. The earths crust or outermost layer, is not made of one single piece of solid rock. It is actually made up of sheets of rocks called tectonic plates. **


 * These plates slide against each other, and thats what begins the EarthQuake!!![[image:http://masterxela.files.wordpress.com/2010/07/crust.jpg width="298" height="222" align="left"]] **
 * Tsunamis are caused by Earthquakes. **