Earthquake

In this post I use information from Encyclopedia Britannica to explain what an earthquake is, what causes it and what are its effects.

SOURCE: earthquakesandplates.wordpress.com

What is an earthquake?

In an earthquake huge rocks move in the earth's surface and makes the ground shake. Earthquake always happens around the world. Most earthquakes are too little to people feel . But sometimes earthquake makes a lot of dangerous loses of life and poverty. 

What causes earthquakes ?

            Earthquakes are caused by changes in the Earth’s crust. The crust is made up of a plates.In different places that plates move apart, bump or slide into each other. This movement causes a big pressure to built up. When the pressure gets too hard, the rocks shift along in the crust. It called a fault. The switching rocks gives energy in the form of shock waves. That waves go through the whole rock in all directions, that causes earthquake.

What are the effects of the earthquake?

Earthquake can be very powerful enough to make huge cracks in the ground. It can damage bridges, railroads, buildings. During earthquakes, some times causes other earth movements, like rock or snow avalanches. Also when earthquakes happen near to the ocean, it causes huge harmful waves called tsunamis.