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An earthquake is the shaking of the ground caused by an abrupt shift of rock along a fracture in the Earth, called a fault.

Earthquake - Wikipedia

en.wikipedia.org/wiki/Earthquake

An earthquake is the shaking of the surface of the Earth, resulting from the sudden release of energy in the Earth's lithosphere that creates seismic waves.

The Science of Earthquakes - Earthquake - USGS Earthquake ...

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

Apr 7, 2016 ... An earthquake is what happens when two blocks of the earth suddenly slip past one another. The surface where they slip is called the fault or ...

USGS FAQs - Earthquakes and Plate Tectonics - What is an ...

www2.usgs.gov/faq/categories/9827/3343

An earthquake is caused by a sudden slip on a fault. The tectonic plates are always slowly moving, but they get stuck at their edges due to friction. When the ...

What is an earthquake?

www.vtaide.com/png/George/earthquake.htm

An earthquake is a shaking of the ground caused by the sudden breaking and movement of large sections (tectonic plates) of the earth's rocky outermost crust.

What is an Earthquake? | Earthquakes | Discovering Geology ...

www.bgs.ac.uk/discoveringGeology/hazards/earthquakes/whatIs.html

The stored energy is suddenly released as an earthquake. Intense vibrations, or seismic waves, spread out from the initial point of rupture, the focus, like ripples ...

What is an Earthquake? - Geoscience Australia

www.ga.gov.au/scientific-topics/hazards/earthquake/basics/what

These are put into a formula which converts them to a magnitude, which is a measure of the energy released by the earthquake. For every unit increase in ...

What is an Earthquake - eSchooltoday

eschooltoday.com/natural-disasters/earthquakes/what-is-an-earthquake.html

earthquake and kids. Introduction to Earthquakes & Tsunamis Turn on the TV or read the newspapers and almost always there is something devastating ...

What Is an Earthquake? - Universe Today

www.universetoday.com/what-is-an-earthquake/

Oct 18, 2016 ... Share. For people who live on or near an active fault line – such as the San Andreas Fault in California, the Median Tectonic Line in Japan, ...

www.ask.com/youtube?q=What Is a Earthquake?&v=hkvkcN9rVHs
Feb 28, 2013 ... Hi, I'm Emerald Robinson, and in this "What is" video, we're going to examine earthquakes. An earthquake is an event in which the earth ...