Earthquakes
An earthquake is a violent shaking of the ground as a result of movements within the Earth's crust.
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Most earthquakes take place near the edges of tectonic plates, which move in different directions at different speeds. Because of these movements faults, which are breaks in the Earth's crust along which blocks of the crust slide relative to one another, appear. Earthquakes occur along faults because of this sliding. Also, earthquakes happen in earthquake zones along tectonic plate boundaries. As tectonic plates push, pull, or slip past each other, stress increases along faults near the plates' edges and due to this stress, rock in the plates deforms. Deformation is the change in the shape of rock in response to stress. A type of deformation called elastic deformation can lead to earthquakes. (Holt Science and Technology, page 2)
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(www.google.com/definitions)
Most earthquakes take place near the edges of tectonic plates, which move in different directions at different speeds. Because of these movements faults, which are breaks in the Earth's crust along which blocks of the crust slide relative to one another, appear. Earthquakes occur along faults because of this sliding. Also, earthquakes happen in earthquake zones along tectonic plate boundaries. As tectonic plates push, pull, or slip past each other, stress increases along faults near the plates' edges and due to this stress, rock in the plates deforms. Deformation is the change in the shape of rock in response to stress. A type of deformation called elastic deformation can lead to earthquakes. (Holt Science and Technology, page 2)
(www.bbc.co.uk)