how happen the earthquake?
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an earthquake happens when tectonic plates move\n\nmountains happen when tectonic plates overlap
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The San Francisco 1906 earthquake occurred along the well-known San Andreas fault. The San Andreas fault is where two different blocks of the Earth's crust contact each other. Take a look at these websites for more information:\n\nhttp://en.wikipedia.org/wiki/1906_San_Francisco_earthquake\n\nhttp://en.wikipedia.org/wiki/San_Andreas_Fault
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An earthquake is a phenomenon that results from and is powered by the sudden release of stored energy in the crust that propagates seismic waves. At the Earth's surface, earthquakes may manifest themselves by a shaking or displacement of the ground and sometimes tsunamis, which may lead to loss of life and destruction of property.\n\nEarthquakes may occur naturally or as a result of human activities. In its most generic sense, the word earthquake is used to describe any seismic event—whether a natural phenomenon or an event caused by humans—that generates seismic waves.\n\nTypes of earthquakes\n\nNaturally occurring earthquakes :-\nMost naturally occurring earthquakes are related to the tectonic nature of the Earth. Such earthquakes are called tectonic earthquakes. The Earth's lithosphere is a patchwork of plates in slow but constant motion caused by the heat in the Earth's mantle and core. Plate boundaries grind past each other, creating frictional stress. When the frictional stress exceeds a critical value, called local strength, a sudden failure occurs. The boundary of tectonic plates along which failure occurs is called the fault plane. When the failure at the fault plane results in a violent displacement of the Earth's crust, the elastic strain energy is released and seismic waves are radiated, thus causing an earthquake. This processes of strain, stress, and failure is referred to as the Elastic-rebound theory. It is estimated that only 10 percent or less of an earthquake's total energy is radiated as seismic energy. Most of the earthquake's energy is used to power the earthquake fracture growth and is converted into heat. Therefore, earthquakes lower the Earth's available potential energy, though these losses are negligible\nEarthquakes occurring at boundaries of tectonic plates are called interplate earthquakes, while the less frequent events that occur in the interior of the lithospheric plates are called intraplate earthquakes.\n\nThe majority of tectonic earthquakes originate at depths not exceeding a few tens of kilometers. In subduction zones, where older and colder oceanic crust descends beneath another tectonic plate, earthquakes may occur at much greater depths (up to hundreds of kilometers). These seismically active areas of subduction are known as Wadati-Benioff zones. Deep focus earthquakes are another phenomenon associated with a subducting slab. These are earthquakes that occur at a depth at which the subducted lithosphere should no longer be brittle, due to the high temperature and pressure. A possible mechanism for the generation of deep focus earthquakes is faulting caused by olivine undergoing a phase transition into a spinel structure.\nEarthquakes may also occur in volcanic regions and are caused by the movement of magma in volcanoes. Such quakes can be an early warning of volcanic eruptions.\n\nA recently proposed theory suggests that some earthquakes may occur in a sort of earthquake storm, where one earthquake will trigger a series of earthquakes each triggered by the previous shifts on the fault lines, similar to aftershocks, but occurring years later, and with some of the later earthquakes as damaging as the early ones. Such a pattern was observed in the sequence of about a dozen earthquakes that struck the North Anatolian Fault in Turkey in the 20th Century, the half dozen large earthquakes in New Madrid in 1811-1812, and has been inferred for older anomalous clusters of large earthquakes in the Middle East and in the Mojave Desert.\n\n\nInduced earthquakes :- \n\nSome earthquakes have anthropogenic sources, such as extraction of minerals and fossil fuel from the Earth's crust, the removal or injection of fluids into the crust, reservoir-induced seismicity, massive explosions, and collapse of large buildings. Seismic events caused by human activity are referred to by the term induced seismicity. They however are not strictly earthquakes and usually show a dif
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You mean earthquakes?  Spelling it right is probably a good starting point.
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Proquest<---is the best\nhttp://www.encyclopedia.com/SearchResults.aspx?Q=Earthquake but maybe this
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Usually when it is hot an earthquake starts.
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There is no reliable method to predict an earth quake.What scientists do is use mathematical models based on historical information of earth quakes and estimate the probability in different regions.Lasers and satellite based data and evaluations are used by some.
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It's probably a coincidence.  If you were where the earthquake happened, I would say you are one of the rare people who are sensitive to the subsonic waves that often precede and earthquake.\n\nI mean look at this map: http://quake.usgs.gov/recenteqs/index.html .  In the past week there were 285 earthquakes in California and Nevada.  Any day you had some pain you could have found an earthquake, possibly happening within minutes.\n\nBut it is possible to feel things in the bones, especially changes in the weather.  In the joints, there is something called sinovial fluid, and it has small bubbles of nitrogen.  Changes in atmospheric pressure can cause pain, especially in arthritic joints.
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Yeah, like the guy above me said. More elequently, it's not knowing WHERE they are going to go, but WHEN.\n\nIt is virtually impossible to tell exactly when sudden displacement along a fault will occur, although the fact that it will eventually occur can be predicted. This is done by comparing the displacement of regions along the fault that move regularly (and without violent earthquakes) to quiet regions that are not experiencing any little quakes. It's the quiet regions that are to be worried about. They just sit and build up elastic potential and then snap all at once without warning.\n\nRule of thumb, do not live along active fault zones, nor on top of any tsunamite deposits (can be recognized by large angular blocks deposited in a diamicton).
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Most earthquakes happen along the edge of the oceanic and continental plates. [Oceanic plates are under water, continental plates are above.] The earth's crust (the outer layer of the planet) is made up of a bunch of pieces, called plates. The plates get moved around by the liquid layers of magma underneath the Earth's crust. The plates are always bumping into each other, and pulling away from each other or past eachother. Earthquakes usually happen when two plates are running into each other or sliding past each other. They can also happen along faults, too though.
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Following an earthquake you should examine your home for potentially dangerous objects that may have fallen or become loose.  Broken objects can be hazardous when stepped on and loosened object can later fall on people.  It is also a good idea to examine your foundation for cracks.
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http://www.bbc.co.uk/science/hottopics/naturaldisasters/earthquakes.shtml
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Energy is produced when an earthquake occurs. This energy is released in the form of seismic waves. These waves travel throughout the entire Earth. Waves transmit energy between different points. There are many kinds of waves, seismic waves are a type of physical wave. \nhttp://msnucleus.org/membership/html/k-6/pt/earthquakes/3/pte3_1a.html
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The world is divided up into different plates, which move around ever so slowly. Sometimes they collide, and a mountain is formed as the sides of the plates hit each other and push upwards. This is how the Himalayas were formed, and they are getting higher as the plates slowly push against each other. Where two plates push past each other, an earthquake can result. This is the case along the San Andreas Fault. Hope this helps!
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Here are two links that provide accounts on the effects of the earthquake.  It appears that geologically the only thing that resulted from the quake was landslides.  Environmentally, people have been displaced, public utilities were not functioning, and property damagse seem to be the most prevalent occurrences.\n\nhttp://www.msnbc.msn.com/id/15278030/\nhttp://news.bbc.co.uk/1/hi/world/americas/6053796.stm
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*\nYes! The Hoosier state has trembled in the wake of earth waves generated by powerful earthquakes in the past, and will, no doubt, tremble again in quakes that are yet to come. These pages briefly describe earthquakes in our past, what causes our earthquakes, what is being done to reduce losses that will result from future quakes, and what you should do before, during, and after an earthquake.\n\n\nEarthquakes in Indiana  [New Window] \nArticle about the history and future of earthquakes in Indiana.\nVerified by a Netscape Security Partner: Netscape Security Center http://igs.indiana.edu/geology/earthquakes/eqinindiana/index.cfm
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The interactions between tectonic plates can cause earthquakes. Plate tectonics is the theory we use to explain how lithospheric or tectonic plates move. For example, two tectonic plates will build up stress (pressure) when their movement is impeded the eventual release of this stress causes an earthquake. There is more material available via Yahoo search. The second source link will help you get a good idea of the plate boundaries.