Unformatted text preview: in the Earth suddenly releases energy, it creates a wave in the ground. • The loca0on where an earthquake starts is called the epicenter. • The epicenter of an earthquake can be located by no0ng when the earthquake waves arrived at several diﬀerent loca0ons. hCp://media.hcpss.org/
newcode/ekits/
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ItemID=2991 hCp://
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earthquake
fault1.jpg 16 Earthquakes Seismograph • Huge amounts of energy are released in earthquakes. • Richter scale: Logarithmic scale (base
10). Each level is 10 0mes stronger than the previous level. Invented by Charles Richter in 1935. Magnitude is not exactly equivalent to
energy. hCp://www.visitrockypoint.com/wp
content/uploads/2010/11/escala
de
richter.jpg 17 Earthquakes • P
Wave • S
Wave (Primary, Pressure, Push) (Secondary, Shear)...
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 Fall '14

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