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"
Step. 1. Earthquakes can be related to most under ground activity. The first most common reason for an earthquake is volcanic activity. If your location has any above ground volcanoes
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What causes earth quakes is the plates under earth move or collide with each other and shake the earth. Tsunamis can be caused also by earthquakes, especially those centered on the
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when the earth plates rub together back and forth
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"Plate tectonics" is what causes an earthquake. Answerfor young students: Earthquakes are shakes and jiggles in the huge pieces of the Earth that form the outside of the
http://wiki.answers.com/Q/How_does_a_eathquakes_fo...
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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