Earthquakes

Earthquakes are displayed natural ground can be defined as breaking abruptly in Earth rocks at depths ranging from the surface to a depth of 720 km resulting in liberation of kinetic energy was stored in the rocks off in various directions in the form of waves of seismic causing vibration of the center, which spread it where they appear on the surface of particles Earth in the form of vibrations.   Rates of occurrence of earthquakes from one place to another on the face of the earth differ While some of them included in seismically active areas, we see that others are less active or more subdued, not the distribution of earthquakes in this land randomly, but as a result of certain conditions and the movements of the floor was the main generator of these earthquakes, interest earthquakes began phenomenon dangerous ground with the increasing amount of seismic destruction and thus increasing the number of people who died due to earthquakes was the ancients believed that earthquakes were representing the wrath the earth and curse God and they direct result of what they do on earth there is no doubt that everything does not happen, but God willing but God made him the reasons and hurry Baltvkr and reflection in which, rather than sit idly by waiting for the first earthquake shakes the ground in order to destroy the houses on our heads, and with the knowledge and technical advances created the world's media and devices that measure earthquakes and deal with it and created a distributed around the globe networks monitor these earthquakes are calculated transactions on clock, emerged the need for an independent science dealing with earthquakes and be harnessed to study, analyze and find ways and means that would limit the dangers was the prominence of Seismology beacon open many closed doors in this natural phenomenon known earthquakes. Earthquakes are classified as one of the strongest and most dangerous natural phenomena on the surface of the ground so that a strong earthquake could be called more energy 10,000 times from the first atomic bomb was dropped energy. The rock movement due to earthquakes can make rivers change course, and earthquakes can cause landslides, resulting in loss of life and property and the earthquakes that occur beneath the seas and oceans may be high water wave flooded beaches tens of kilometers. It is known and recognized that earthquakes do not kill people directly, but what kills resulting from earthquakes from falling objects and the collapse of the constructors and the outbreak of fires and by radiation and chemotherapy infusion poisoning. Earthquake magnitude depends on the amount of broken rocks and thus the amount of energy liberated them, The amount of energy released from a large earthquake can shake the ground dramatically and violently while small earthquake energy earth-shaking slightly resembles the vibration caused by the passage of a truck, for example. Is generally strong and destructive earthquake occurs less than once every two years and occurs approximately 800 moderate earthquake and devastating somewhere in the world every year and happens about 40,000 to 50,000 imperceptible small earthquake every year also. Most of the earthquakes are located along faults, which represent cracks and cracks in the hard rock side of the earth in a place where one aspect of rock may move abruptly on another vertical movement or vertical side, and spoke the cracks in the vulnerable areas of land, mostly located below the surface of the earth, but in some often can be clearly seen from the Earth's surface Kvalq San Andreas in California. High pressure, which affects the rocks in bent or distorted works and when the pressure of power so important beyond endurance rocks break those rocks and move to new locations, causing seismic vibrations.

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