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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.

Earthquake

en.wikipedia.org/wiki/Earthquake

Magnitude 3 or lower earthquakes are mostly almost imperceptible or weak and magnitude 7 and over potentially cause serious damage over larger areas, ...

What is an earthquake and what causes them to happen? - USGS

www.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 ...

The Science of Earthquakes

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

Jul 18, 2012 ... An earthquake is what happens when two blocks of the earth suddenly slip past one ... What causes earthquakes and where do they happen?

Why Do Earthquakes Happen?

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

Earthquakes are usually caused when rock underground suddenly breaks along a fault. This sudden release of energy causes the seismic waves that make the ...

What Causes an Earthquake? Faults Explained - National Geographic

news.nationalgeographic.com/news/2014/01/140115-earthquakes-california-faults-science/

Jan 15, 2014 ... What was that you felt? Faults deep underground produce different kinds of earthquakes.

The Causes of Earthquakes - Video & Lesson Transcript | Study.com

study.com/academy/lesson/the-causes-of-earthquakes.html

In this video lesson you will learn what causes earthquakes and where they occur. You will also understand the theory of elastic rebound, and how...

The Causes of Earthquakes - SOEST - University of Hawaii

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

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) ...

www.ask.com/youtube?q=What Causes Earthquakes?&v=SB-FmX6_2lM
Mar 12, 2014 ... An earthquake is the shaking of the ground caused by an abrupt shift of rock along a fracture in the Earth, called a fault. Within s...

What causes Earthquakes? - Geoscience Australia

www.ga.gov.au/earthquakes/staticPageController.do?page=/about-earthquakes/what-causes-an-earthquake

What causes Earthquakes. The Earth's outer layer or crust is broken into pieces called tectonic plates which are constantly moving towards, away from or past ...

Popular Q&A
Q: What causes earthquakes?
A: The earth’s landmasses ride like gigantic rafts on ‘plates’, or sections of the earth’s outermost layer, the crust. These plates frequently slip and slide, caus... Read More »
Source: www.quora.com
Q: WHAT CAUSES EARTHQUAKES?
A: An earthquake is the result of a sudden release of stored energy in the Earth's crust triggered by shifting tectonic plates. The Earth's lithosphere is an elabo... Read More »
Source: www.sciencedaily.com
Q: What causes earthquakes?
A: L ONG time ago, a large collection of material masses coalesced to form the earth. Large amount of heat was generated by this fusion, and slowly as the earth co... Read More »
Source: www.tribuneindia.com
Q: What Causes Earthquakes?
A: Plate tectonics. They are driven by the earth's geodynamo. When they collide, spread apart, or slide by one another (like in San Andreas) they release energy. T... Read More »
Source: answers.yahoo.com
Q: What causes earthquakes?
A: Movements around the techtonic plates cause faults. The faults cause waves of energy that make the ground shake. Read More »
Source: answers.yahoo.com