The Earth's crust shaken thousands of times every year ... And prediction is difficult and under the Earth's crust has landslides,
but it is difficult to accurately predict
earthquakes.
The ancient Japanese believed that the cause of the
Earthquake was a giant fish blow under the surface of the earth, but scientists now say that earthquakes occur as a result of the collapse of the Earth's crust due to the accumulation of excessive pressure on the rock collapse may occur along the rift that already exists or a new rift in the Earth's crust and the result is the same in exit energy from a source or focus of the earthquake and the earthquake energy is in the form of waves moving, shaking, to pay off too quickly through the Earth and increasing to hit the Earth's crust, such as railway cars off the rail and shaking movement curly waves lead to vibration experienced by the rocks from side to side, leading to the largest damage.
Every year, the earth planet expose for nearly half a million earthquakes mostly weak to the point that did not discovered devices to monitor earthquakes and the earth planet being devastated by an earthquake every three days, but the major earthquake that reach magnitude 8 on the Richter scale occurs once or twice a year and the earthquake is a global problem that can exposed to anywhere in the world, but more damaging tremors, located at the ends of the deformed crust may find its way to the pressure within the crust shown by sudden movement along the fault, which causes an earthquake persons.