Earthquakes are caused by a buildup in strong forces along a faultline. When the forces are sufficient to overcome the frictional force of the two rubbing surfaces of the faultline, an earthquake, temblor or tremor occurs. The motion is eithwer up and down or side to side.
Earthquakes cannot be accurately predicted at this time. There are numerous theories about mechanisms for predicting earthquakes but nothing near predicting one and seeing it happen within a few years time.
2007-03-05 17:36:53
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answer #1
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answered by KingGeorge 5
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Earthquakes can occur with volcanic eruptions. The more usual earthquakes occur due to shifts in land-mass plates that float on the molten interior of the earth. Where plates meet, the movement is not constant, but occurs after stresses build up at the point where motion is resisted. When the stress reaches a certain level, the shift occurs and there is an earthquake. If the stress is small, the earthquake will be small.
There are anecdotic instances of animals being uneasy before earthquakes and other such stuff. Geologists and mathematicians are trying to use stress theory to predict earthquakes, but the results are not too great. There is also a statistical approach based on past records, but in many cases, the past records only consist of a few events. For example, in 1889, a severe earthquake hit Charleston, SC about the most unexpected place for one you can find. But since it did, there is a statistical expectation that another can happen sometime in finite time.
2007-03-06 01:33:59
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answer #2
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answered by cattbarf 7
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That is a question involving Geology and Plate Tectonics. There are now instruments and tools that can monitor the waves that bounce back and forth between the center of the earth and the location of the earth from which earthquakes occur which is making it easier to predict where possible major future earthquakes will occur. There are also high tech instruments that can tell us where a tsunami will occur; however; this still will not protect us under certain conditions where the earthquakes and these waves take place close to shorelines because timing is the major problem! We cannot determine how fast these things take place and how to prepare for them in such situations. Furthermore, many people just continue to live on ignore this or take it lightly.
2007-03-06 01:33:30
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answer #3
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answered by Anonymous
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