Earthquake

 

          An earthquake is a vibration or shock that occurs on the surface of the earth. Earthquake are usually caused by movement of the earth's crust (tectonic plates). A large earthquake can make the earth Tsunami. Earthquake measured by using a tool called the Richter Scaler.

         Most earthquakes result from the release of energy generated by the pressure exerted by a moving plate. The longer the pressure was becoming enlarged and eventually reach the state where the pressure can not be arrested again by the edge of plate. That's when an earthquake will occur. Several other earthquakes can also occur due to the movement of magma inside the volcano. Such an earthquake could be symptoms of impending volcanic eruptions.

         There are several types of earthquakes, including:
1.Volcanic earthquakes: This earthquake occurred as a result of magmatic activity, which usually occurs before the volcano erupted.
2.Tectonic earthquake: An earthquake is caused by tectonic activity, namely a shift in plate tectonic plates suddenly having the power of the very small to very large. This earthquake generated a lot of damage or natural disasters on earth, a strong earthquake vibrations can spread throughout the earth

           And the effects of earthquakes include. Many people who lost their homes, their families and possessions and many people who died and were injured. Earthquake psychological trauma can lead to considerable depth.