What Causes a Earthquake?


An earthquake is described as a sudden movement or tremor of the crust of the earth which originates from under or on top of the surface. The two major causes of earthquakes are explosive volcanic eruptions and tectonic activities related to plate faults and margins.
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earthquakes are usally caused by rocks when they move past each other along a fault,their rough surfaces catch,temporarily halting movement along th fault.however,forces keep driving
2 Additional Answers
Ask.com Answer for: what causes a earthquake
Earthquakes are caused by an abrupt shift of rock along a fracture in the Earth.
Most earthquakes are caused by slow movements inside the Earth that push against the Earth's brittle, relatively thin outer layer, causing the rocks to break suddenly.
The movement of two of the Earth's plates, or layers, is what causes an earthquake. The two plates move and either run into each other or slide past each other. You can find more information here: http://earthquake.usgs.gov/learn/kids/eqscience.php
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