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Earthquake - Wikipedia


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

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


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 ...

What is an earthquake and what causes them to happen?


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?


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.

Earthquakes 101 - National Geographic


Earthquakes are unpredictable and can strike with enough force to bring buildings down. Find out what causes earthquakes, why they're so deadly, and what's ...

What is an Earthquake - eSchooltoday


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? | Earthquakes | Discovering Geology ...


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? - Universe Today


Oct 18, 2016 ... An earthquake is defined as a perceptible tremor in the surface of the Earth, which is caused by seismic waves resulting from the sudden ...

What is an Earthquake? - Geoscience Australia


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 ...

Activity #2 -- What is an Earthquake?


These are simple, easy-to-visualize models, some of which you may have heard or seen used before to describe what happens along a fault in an earthquake.

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