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.
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 ...
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 ...
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.
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 ...
Earthquakes are unpredictable and can strike with enough force to bring
buildings down. Find out what causes earthquakes, why they're so deadly, and
earthquake and kids. Introduction to Earthquakes & Tsunamis Turn on the TV or
read the newspapers and almost always there is something devastating ...
Earthquake Waves Spread Out. Movements within the Earth's crust cause stress
to build up at points of weakness, and rocks to deform. Stored energy builds up ...
The West Coast is most at risk of having an earthquake, but earthquakes can
happen in the Midwest and along the East Coast. Earthquakes can be felt over ...
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 ...