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Earthquake

en.wikipedia.org/wiki/Earthquake

An earthquake is the perceptible shaking of the surface of the Earth, resulting from the sudden ... Earthquakes are caused mostly by rupture of geological faults, but also by other events such as vo...

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

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 ...

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 is an Earthquake? - Geoscience Australia

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

Earthquakes are the vibrations caused by rocks breaking under stress. The underground surface along which the rock breaks and moves is called a fault plane.

What Causes an Earthquake? Faults Explained

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.

earthquake: Causes of Earthquakes - Infoplease

www.infoplease.com/encyclopedia/science/earthquake-causes-earthquakes.html

Causes of Earthquakes Most earthquakes are causally related to compressional or tensional stresses built up at the margins of the huge moving.

Earthquakes & Tsunamis: Causes & Information - LiveScience

www.livescience.com/21486-earthquakes-causes.html

Apr 20, 2015 ... Earthquakes occur every day, but most people don't notice the small ones. Here's what causes earthquakes.

What causes earthquakes? - Ministry of Energy and Mines

www.empr.gov.bc.ca/Mining/Geoscience/SurficialGeology/Earthquakes/Pages/causes.aspx

Earthquakes are caused when stress, building up within rocks of the earth's crust, is released in a sudden jolt. Rocks crack and slip past each other causing the ...

What causes earthquakes? - Explain that Stuff

www.explainthatstuff.com/earthquakes.html

Oct 16, 2015 ... An easy-to-understand explanation of what causes earthquakes, how they move through Earth, and how we can protect buildings and people ...

BBC - GCSE Bitesize: Causes

www.bbc.co.uk/schools/gcsebitesize/geography/natural_hazards/earthquakes_rev1.shtml

A secondary school revision resource for GCSE Geography, looking at the causes of earthquakes, tectonics and their effects including case studies.

Answer
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.
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The Science of Earthquakes

earthquake.usgs.gov

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

The Causes of Earthquakes - SOEST - University of Hawaii

www.soest.hawaii.edu

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) ...

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

study.com

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...