EarthquakesThe heat from the hard core, in addition to global tectonics moving. To make the crust bottom grew more than the upper surface of the skin because the world has a much lower temperature, naughty world. In addition, the surface area of the Earth also has changed the temperature at all times. These reasons make the crust with the expansion and contraction is not smooth. This influence affects the cracks in the stones and joints between plate tectonics directly. Are the boundaries between some of the crust may be split. Some mobile collision The collision or split of the crust may cause the crust in the area caused by a sudden change like the crust to the groundwater. Make the crust area of the runes to affect or moving along and will send a shock or impact of the movement on this issue to the level of the surrounding area, in the form of waves. We call a change to crust that occur. In this manner, that the earthquakes from a study of geologists found that boundary area between the crust had a chance to pad the earthquake, more than any other area, this is because of plate tectonics move. Therefore, there is a chance the seam area, caused shock and impact if the impact is severe shock occurred until the crust area of the runes, torn along the groundwater level or down quickly by the effect of gravity in the world. They can makes the building. Households, and various construction and erosion damage.
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