azthree: Text Explanation

EARTHQUAKE

An earthquake is a vibration or shock that occurs on the surface of the earth. Ordinary earthquakes caused by the movement of the earth's crust (plates of the earth). The word earthquake is also used to indicate the origin of the earthquake occurrence. Our earth, although solid, always moving, and an earthquake occurs when the pressure is happening because the movement was already too large to be arrested.

Most earthquakes result from the release of energy generated by the pressure by the moving plates. The longer the growing pressure and eventually reached the state where the pressure can not be arrested again by the edge of the plate. At that moment an earthquake is going to happen. Earthquakes usually happen at plate boundaries such plates. Earthquakes are usually the worst happens on the border of compressional and translational plate. Focus on earthquake likely to occur because the material is sandwiched layer of the lithosphere into a phase transition at a depth of more than 600 km. Several other earthquakes can also occur due to movement of magma inside the volcano. Such an earthquake could be symptoms of impending volcanic eruptions. Several earthquakes (but rarely) also occur because of accumulated mass of water behind huge dams, such as the Caribbean Dam in Zambia, Africa. Some more (also rare) may also occur due to fluid injection from / to the earth (eg at several power plants and geothermal power in the Rocky Mountain Arsenal. Finally, earthquakes can also occur from detonation of explosives. It can create scientists monitor secret nuclear weapons tests conducted by government.

Impact of earthquakes, among others claimed many victims, many damaged buildings, such as buildings - schools, government buildings, so the activities can not walk very well. Magnitude earthquakes can sometimes cause large tsunami.Government should be more concerned about the disaster that had befallen the community and should respond by providing appropriate assistance.

(Source : www.google.com)

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