what are earthquakes?
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An earthquake is the result of a sudden release of stored energy in the Earth's crust that creates seismic waves. ... Earthquakes may occur naturally or as a result of human activities. Smaller earthquakes can also be caused by volcanic activity, landslides, mine blasts, and nuclear experiments.
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An earthquake is the sudden movement or trembling of the Earth's tectonic plates, resulting in shaking of the ground. There can be many earthquakes over a short time frame in a small area. The sudden release of tension in the tectonic plates sends waves of energy that travel through the Earth.
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