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Earthquakes are usually caused when rock underground suddenly breaks along a fault. This sudden release of energy causes the seismic waves that make the ground shake. When two blocks of rock or two plates are rubbing against each other, they stick a little.
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An earthquake is a sudden,violent shaking  of earth's surface.It is caused when two or more tectonic plates move slightly.When this happens, disturbances are produced in the earth’s crust, which lead to an earthquake on the surface of the Earth
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