f. d. Richer sagale columnA 1. Circumpacific Belt Column B 2. crust a. shaking and the trembling of the ground b. first layer of the earth 3. earthquake 4. epicenter d. cappens with a strong volcanic eruption 5. intensity 6. magnitude 1. tectonic earthquake 8. volcanic earthquake e. amount by the ment of the earth's crust f. refers to thergy released by an earthquake from its focus g. Iocation the effects of the earthquake h. ised to dere crustal plates are weak i. used to detect earthquake i. area above where the earthquake originates
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Earthquake Magnitude. $\quad$ Refer to Example $13 .$ Various locations of earthquakes and their intensities are given below. What was the magnitude on the Richter scale? a) San Francisco, California, $1906: 10^{7.7} \cdot I_{0}$ b) Chile, $1960: 10^{9.5} \cdot I_{0}$ c) $\operatorname{Iran}, 2003: 10^{6.6} \cdot I_{0}$ d) Turkey, $1999: 10^{7.4} \cdot I_{0}$ e) Peru, $2007: 10^{8.0} \cdot I_{0}$ f) China, $2008: 10^{7.9} \cdot I_{0}$ g) Indonesia, $2004: 10^{9.1} \cdot I_{0}$ h) Japan, $1995: 10^{6.9} \cdot I_{0}$
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In $1989,$ the Loma Prieta earthquake damaged the city of San Francisco with an intensity of approximately $10^{6.9} I_{0} .$ Film footage of the 1989 earthquake was captured on a number of video cameras including a broadcast of Game 3 of the World Series played at Candlestick Park. (See Example $\mathbf{1 0}$ ) a. Determine the magnitude of the Loma Prieta earthquake. b. Smaller earthquakes occur daily in the San Francisco area and most are not detectable without a seismograph. Determine the magnitude of an earthquake with an intensity of $10^{3.2} I_{0}$. c. How many times more intense was the Loma Prieta earthquake than an earthquake with a magnitude of 3.2 on the Richter scale? Round to the nearest whole unit.
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Earthquakes The magnitude of earthquakes since 1900 that measure 0.1 or higher on the Richter scale in California is approximately normally distributed, with $\mu=6.2$ and $\sigma=0.5,$ according to data obtained from the U.S. Geological Survey. (a) What is the probability that a randomly selected earthquake in California has a magnitude of 6.0 or higher? (b) What is the probability that a randomly selected earthquake in California has a magnitude less than $6.4 ?$ (c) What is the probability that a randomly selected earthquake in California has a magnitude between 5.8 and $7.1 ?$ (d) The great San Francisco Earthquake of 1906 had a magnitude of $8.25 .$ Is an earthquake of this magnitude unusual in California? (e) What is the percentile rank of a California earthquake that measures 6.8 on the Richter scale? (f) What is the percentile rank of a California earthquake that measures 5.1 on the Richter scale?
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