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On the Richter scale, a magnitude 7.0 earthquake is 100 times more powerful than a magnitude 5.0 earthquake.
When compared to a magnitude 5 earthquake, a magnitude 7 earthquake is 100 times stronger. The scale went up from 5 to 7, which is an increase of 2, so you multiply the magnitude of the weaker earthquake earthquake by 107-5, which equals 102, to get the magnitude of the stronger earthquake..
earthquake, any jolting of the earth that occurs suddenly and is brought on by seismic waves moving through the planet's rocks. Seismic waves magnitude are created when a form of energy that has been trapped in the Earth's crust for a while suddenly escapes, typically when massive rocks that are rubbing up against one another suddenly fracture and "slip." Most earthquakes happen along geologic faults, which are confined areas earthquake where rock masses move relative to one another. The major fault lines in the world can be found on the edges of the enormous tectonic plates that make up the crust of the Earth. (View the list of large earthquakes.)
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