What Causes a Earthquake?

Answer

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.
Q&A Related to "What Causes a Earthquake"
An earthquake is a quake or tremor that is felt on the earth's surface after the tectonic plates below the surface have shifted causing the tremor.
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Earthquakes are caused by the release of stress in the crustal rocks. When two tectonic plates collide, one will generally subduct below the other. In doing so, irregularities on
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two plates are moving under growned and one goes on top and the ground starts to ske as well
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Most of the largest earthquakes in Japan are caused by subduction of the Philippine Plate or Pacific Plate, with mechanisms that involve either energy released within the subducting
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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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