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| Home » Earth Quake Informations » Measuring Intensity |
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| Earth Quake Information - Measuring Intensity |
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Measuring Intensity
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| Richter Magnitude Scale |
In 1935 Charles F. Richter developed the Richter Magnitude Scale to mathematically rate how much force an earthquake releases based on seismograph readings. The scale takes into account the distance between various seismographs, the density of the ground and other factors to give a number for reference. Each increase in whole number on the scale is ten times the measured amplitude (strength) of the previous and corresponds to about 31 times more energy released by the quake.
Uncounted numbers of quakes less than 2.0 happen each year with several thousand over 4.5 on the scale. The highest on the scale and most damaging have had magnitudes of 8.0 to 8.9. Quakes in this range occur about once per year. The simplified version below gives an idea of how the scale works.
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| Dictionary of Chemical Terms
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 | Look up unfamiliar chemistry terms....
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| Plasma Dictionary |
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The Plasma Dictionary is based on the Fusion & Plasma Glossary that was originally created on FusEdWeb, Fusion Energy Educational Website which has additional introductory information on plasma and fusion science . Click on the first letter of the word you would like to look up
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| Planet Dictionary |
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A planet (from the Greek planete means "wanderer" or
more forcefully "vagrant, tramp") is an object in orbit around a star
that is not a star in its own right. Much like "continent," "planet"
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| Dictionary of Chemical Terminology |
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A science that deals with the history of the earth as recorded in rocks.
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