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Earthquake project for Mr. Lattanzio

Earthquakes are very impacting.

Krys Underwood

on 9 February 2011

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Transcript of Earthquake project for Mr. Lattanzio

•An earthquake (also known as a quake, tremor, or temblor) is the result of a sudden release of energy in the Earth's crust that creates seismic waves. The aftermath After an earthquake, many people's worlds are torn upside down. They are eithier homeless, parentless, injured, or emotionally unstable. Earthquakes also effect stores, buildings, and sidewalks. An earthquake is shaking and vibration at the surface of the earth resulting from underground movement along a fault plane of from volcanic activity. What's an Earthquake? They will occur anywhere within the earth where there is enough stored elastic strain energy to drive fracture propagation along a fault plane. examples: Tuesday, January 12, 2010 there was an earthquake in Haiti. September 30, 2009 there was an earthqake in Indonesia. August 15, 2008 there was an earthquake in Peru. What Causes Earthquakes? As tectonic plates press against one another, stress builds along faults near their edges. Deformation is the change in the shape of rock in response to stress.Deformation is not what causes an earthquakes to happen.However, elastic deformation does lead to earthquakes. Elastic Deformation A change in shape of an object under an applied load from which the object can recover or return to its original unloaded state when the load is removed. This is very unlikely, though, as earthquakes cause permanent damage. (For more on the offical definiton, see here.) http://www.merriam-webster.com/dictionary/elastic%20deformation Haiti On January 12, 2010, disaster struck in one of the poorest most underdeveloped countries in the world. Haiti was hit by an earthquake, the worst one in more than 200 years. Its capital turned to nothing but rubble, it's people helpless, alone, and deceased. The death toll tallied at least 250,000 lost lives, a total damage of 14 million dollars. More than one million Haitians still live under tents, classified as homeless, due to the tragic disaster. Many have started to heal and rebuild their houses, with the help of money from other wealthier countries. The U.S. is proudly helping haiti and the people of Haiti. However, many people are still scarred. People have lost their children, people have lost their parents. This earth shattering catastrophe destroyed many landmarks to vanish and many forests to turn to dust. http://www.schooltube.com/video/eff163e84083a2f0354b/earthquakes Earthquakes are the Earth's natural means of releasing stress. More than a million earthquakes rattle the world each year. The West Coast is most at risk of having an earthquake, but earthquakes can happen in the Midwest and along the East Coast. This, however, is typically rare. Earthquakes can be felt over large areas although they usually last less than one minute. Earthquakes cannot be predicted, but todays technology and scientists are working to change that. There are about 20 plates along the surface of the earth that move continuously and slowly past each other. When the plates squeeze or stretch, huge rocks form at their edges and the rocks shift with great force, causing an earthquake.As the plates move. they put forces on themselves and each other. When the force is large enough, the crust is forced to break. When the break occurs, the stress is released as energy which moves through the Earth in the form of waves, which we feel and call an earthquake.
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