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www.answers.com/Q/What_causes_earthquakes

The processes of "plate tectonics" are what cause an earthquake. An answer for young students : Earthquakes are shakes and jiggles in the huge pieces of the Earth that form the outside of the big ...

www.quora.com/What-causes-earthquakes

What causes earthquakes? Earthquakes are caused by tectonic movements in the Earth's crust. The main cause is that when tectonic plates collide, one rides over the other, causing orogeny (mountain building), earthquakes and volcanoes. The boundari...

www.soest.hawaii.edu/GG/ASK/earthquakes.html

Reply to ASK-AN-EARTH-SCIENTIST Subject: What causes earthquakes? What causes earthquakes? The short answer is that earthquakes are caused by faulting, a sudden lateral or vertical movement of rock along a rupture (break) surface.

www.scholastic.com/browse/article.jsp?id=4880

Q. What Causes Earthquakes? A. Earthquakes are naturally occurring phenomena. Most are caused by the constant movement between the Earth's plates.Along the San Andreas Fault they are caused by the Pacific Plate sliding past the North American Plate. Sometimes, two plates catch and energy builds up. At a certain point, something has to give.

answers.yahoo.com/question/index?qid=20080610115836AA5Cc1n

Best Answer: Ok I'll try to answer this as simply as I can: The earth's crust is made up of several different plates (tectonic plates) which cover the hot mass of magma known as the mantle. Earthquakes usually happen around where the edges of these plates meet (plate boundaries).

earthquake.usgs.gov/learn/kids/eqscience.php

These are smaller earthquakes that occur afterwards in the same place as the mainshock. Depending on the size of the mainshock, aftershocks can continue for weeks, months, and even years after the mainshock! What causes earthquakes and where do they happen? The earth has four major layers: the inner core, outer core, mantle and crust. (figure 2 ...

www.kids-fun-science.com/what-causes-earthquakes.html

What causes earthquakes Earthquakes waves radiate outward in all directions from the earthquake focus. The focus is where the rocks first break apart during an earthquake. Earthquake faults are places where two crustal plates are moving together, apart or slipping past each other.

www.geo.mtu.edu/UPSeis/why.html

Why Do Earthquakes Happen? Earthquakes are usually caused when rock underground suddenly breaks along a fault. This sudden release of energy causes the seismic waves that make the ground shake. When two blocks of rock or two plates are rubbing against each other, they stick a little. They don't just slide smoothly; the rocks catch on each other.

simple.wikipedia.org/wiki/Earthquake

An earthquake is the shaking of the surface of the Earth.Earthquakes can be extremely violent. They are caused by weird movements of the Earth's tectonic plates.. The study of earthquakes is called seismology. Earthquakes are usually quite brief, but may repeat.

answers.yahoo.com/question/index?qid=20130614041155AAouNIg

Best Answer: What causes earthquakes? The short answer is that earthquakes are caused by faulting, a sudden lateral or vertical movement of rock along a rupture (break) surface. Here's the longer answer: The surface of the Earth is in continuous slow motion. This is plate tectonics--the motion of immense ...