What is earthquake? complete guidance

 

Earthquake is one of the natural disasters. The origin can be traced to the early days of the formation of the earth. It is responsible for a lot of damage to living organisms and non-living. For many centuries no man who does not know why earthquakes occur and how they occur and to what extent the damage will be. He believed he was the only one who was angry with Mother Earth and caused the earthquake and that he always feared.It was left to Aristotle, the great Greek philosopher, to link this phenomenon of the earthquake to physical factors. According to Aristotle, when the compressed air escapes into the bow, shake it part of the land. This is called the emission of volcanic activity. When the volcano exploded, and a lot of lava, gas and other out of the ground, and the failure of the exit. This causes a pressure imbalance and results in the production of earthquake waves in the surrounding areas. Thus has been identified that volcanic activity is one of the causes of earthquakes. Results of volcanic activity in the crack. To fill the new errors on the movement of the earth takes place. This causes the earthquake.The second reason is the isostatic adjustment. Earth's surface and some of the blocks and barriers set up a certain depression. They keep the balance of the earth, and when the rotor moves the units of the axis. Raised these blocks until it is washed down due to various reasons, and why the imbalance. Earthquakes also occur and then to restore and maintain this balance.We can see that earthquakes usually occur in areas volcano Prime Minister and under the feet of the hills and mountains, as well as any settlement earthquakes occur frequently in China, Japan, the Philippines, and southern parts of the Himalayas, cut off Prime Minister volcano in Europe and parts of North West and South America. It is also likely to occur in the state of Rajasthan in India and Arab countries.One can not say that earthquakes do not occur in other places. They may occur in any part of the world at any time. We are not sure of the very radical Islamic movements from the ground and pressure points and the session. Only in this way one can determine the areas, are likely to occur.All earthquakes do not cause serious damage. Those that are of high density is really dangerous. There are standards to measure the intensity of the earthquake. It was the first one in the scope of Mercall. Is the measure of a qualitative, not quantitative scale, and so are not useful for measuring the density. The second is the Richter scale. Is released from inside the Richter scale. Measured with numbers. If the earthquake measures 7 points on the Richter scale, it causes severe damage because of severe intensity. Perhaps those measuring 5 points and less do not cause much damage.Scientists are now able to study and determine the secondary waves and higher education also in the waves of earthquakes. Scientists are able to study the radical Islamic movements in the wave of the help of a device called a seismograph. Helping one can also predict the possibility of an earthquake is likely, "Where and when is likely to happen.In India more than earthquakes occur in the Himalayas, the Ganges and Brahmaputra valleys. Was signed by only a few earthquakes in the Deccan Plateau. Earthquake, which occurred in 1967 in Icwyna and the earthquake in 1993 in the state of Maharashtra in the last Latour are in this area.And can in this respect than men of natural disasters can not be the only master he becomes a master of nature altogether. This is not possible for a man with limited knowledge of nature has in his leadership.