An Introduction to Physical Science
14th Edition
ISBN: 9781305079137
Author: James Shipman, Jerry D. Wilson, Charles A. Higgins, Omar Torres
Publisher: Cengage Learning
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Chapter 21, Problem 10MC
On the Richter scale, a magnitude 7.0 earthquake is how many times more powerful than a magnitude 6.0 earthquake? (21.5)
- (a) 1
- (b) 25
- (c) 31
- (d) 100
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The intensity of a wave of an earthquake is measured as 9 J/m². At a different point 8.6 km away from the first point the intensity is reduced by 20%. At what distance from the centre of the earthquake is the first intensity measured.
Please give your result in km with 1 decimal. (The centre of the earthquake, the first point and the second point should all be in one straight line).
4) The Richter scale is used for measuring the magnitude of an
earthquake. The Richter magnitude R is given by the model
R = 0.67 log(0.37 E) + 1.46
Where E is the energy (in kilowatt-hours) released by the
earthquake.
An earthquake in Pakistan on June 8, 2007. released 132,372
kilowatt hours of energy, what was the earthquake's magnitude
(to the nearest tenth)?
a) 4.1
b) 4.3
d) 4.8
c) 4.6
The Richter Scale is used for measuring the magnitude of earthquakes. the magnitude of an earthquake is, by deifnition, measured 100 kilometers from its originating point, and is given by the equation M = log(s/10^-4), where S is the "strength" of the earthquake, as determined by the shockwaves it sends through the ground. Earthquake strengths vary greatly from 0 in some cases to 800,000,000 or more in other cases which is why a logarithmic scale is used to measure their magnitudes.
(I already know Part A)
Part B
Suppose a given earthquake is twice as strong as another earthquake. Determine the difference in magnitude of these earthquakes.
Part C
The largest manmade explosion was the test detonation of the Tsar Bomba hydrogen bomb. It was equivalent to about 50 million tons of TNT. It was similar in intensity to a magnitude 8.5 earthquake. The stronger earthquake ever recorded was the 1960 Valdivia earthquake than the Tsar Bomba? How much TNT was the earthquake equivalent to? Show…
Chapter 21 Solutions
An Introduction to Physical Science
Ch. 21.1 - What are the four regions of the Earths interior?Ch. 21.1 - Prob. 2PQCh. 21.2 - Prob. 1PQCh. 21.2 - Prob. 2PQCh. 21.3 - Prob. 1PQCh. 21.3 - Prob. 2PQCh. 21.4 - Prob. 1PQCh. 21.4 - Prob. 2PQCh. 21.5 - Prob. 1PQCh. 21.5 - On what crustal plate is Los Angeles located, and...
Ch. 21.6 - Prob. 1PQCh. 21.6 - Prob. 2PQCh. 21 - Prob. AMCh. 21 - Prob. BMCh. 21 - Prob. CMCh. 21 - Prob. DMCh. 21 - Prob. EMCh. 21 - Prob. FMCh. 21 - Prob. GMCh. 21 - Prob. HMCh. 21 - Prob. IMCh. 21 - Prob. JMCh. 21 - Prob. KMCh. 21 - Prob. LMCh. 21 - Prob. MMCh. 21 - Prob. NMCh. 21 - Prob. OMCh. 21 - Prob. PMCh. 21 - Prob. QMCh. 21 - Prob. RMCh. 21 - Prob. SMCh. 21 - Prob. TMCh. 21 - Prob. UMCh. 21 - Prob. VMCh. 21 - Prob. WMCh. 21 - Prob. XMCh. 21 - Prob. YMCh. 21 - Prob. ZMCh. 21 - Prob. AAMCh. 21 - Prob. BBMCh. 21 - Prob. 1MCCh. 21 - The Moho boundary separates which two layers of...Ch. 21 - Prob. 3MCCh. 21 - Which of the following geologic evidence does not...Ch. 21 - Prob. 5MCCh. 21 - Which of the following is a primary cause of...Ch. 21 - Prob. 7MCCh. 21 - Prob. 8MCCh. 21 - What process during plate collisions leads to the...Ch. 21 - On the Richter scale, a magnitude 7.0 earthquake...Ch. 21 - Prob. 11MCCh. 21 - Prob. 12MCCh. 21 - Prob. 1FIBCh. 21 - Prob. 2FIBCh. 21 - Prob. 3FIBCh. 21 - Prob. 4FIBCh. 21 - Prob. 5FIBCh. 21 - Prob. 6FIBCh. 21 - Prob. 7FIBCh. 21 - Prob. 8FIBCh. 21 - Dubbed the ___, it is the geologically active...Ch. 21 - Prob. 10FIBCh. 21 - Prob. 11FIBCh. 21 - Prob. 12FIBCh. 21 - Prob. 1SACh. 21 - Name the four major regions of the Earth, from...Ch. 21 - Prob. 3SACh. 21 - Prob. 4SACh. 21 - Explain the mechanism behind continental drift.Ch. 21 - What is the Mid-Atlantic Ridge?Ch. 21 - Prob. 7SACh. 21 - Prob. 8SACh. 21 - Prob. 9SACh. 21 - Prob. 10SACh. 21 - Explain how continental crust and oceanic crust...Ch. 21 - Prob. 12SACh. 21 - Prob. 13SACh. 21 - Prob. 14SACh. 21 - Prob. 15SACh. 21 - Prob. 16SACh. 21 - Prob. 17SACh. 21 - Prob. 18SACh. 21 - Prob. 19SACh. 21 - Prob. 20SACh. 21 - Prob. 21SACh. 21 - Prob. 22SACh. 21 - Prob. 23SACh. 21 - Prob. 24SACh. 21 - Prob. 25SACh. 21 - Distinguish among a normal fault, a reverse fault,...Ch. 21 - Prob. 27SACh. 21 - Prob. 28SACh. 21 - Prob. 1VCCh. 21 - State two similarities between the methods used by...Ch. 21 - Prob. 2AYKCh. 21 - Describe an accurate method to measure the...Ch. 21 - Prob. 4AYKCh. 21 - Prob. 5AYKCh. 21 - Refer to Fig. 21.16 and 21.19. In terms of...Ch. 21 - What forces and factors determine whether a rock...
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Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, physics and related others by exploring similar questions and additional content below.Similar questions
- The Richter Scale is used for measuring the magnitude of earthquakes. the magnitude of an earthquake is, by deifnition, measured 100 kilometers from its originating point, and is given by the equation M = log(s/10^-4), where S is the "strength" of the earthquake, as determined by the shockwaves it sends through the ground. Earthquake strengths vary greatly from 0 in some cases to 800,000,000 or more in other cases which is why a logarithmic scale is used to measure their magnitudes. Part A One of the strongest earthquakes ever recorded had a magnitude of 8.9 on the Richter Scale. i) Determine the strength of this earthquake. ii) What would be the magnitude of an earthquake four times weaker than this one? iii) How many times stronger was this earthquake than the magnitude 2 earthquake that stuck central New Jersey in 2012? Part B Suppose a given earthquake is twice as strong as another earthquake. Determine the difference in magnitude of these earthquakes. Part C The largest…arrow_forwardThe intensities I of two earthquakes are compared with the Richter scale magnitudes, M. log (I2/I1) = M2 – M1 How many times greater is the intensity of earthquake 2 with M2 = 8.0 than earthquake 1 with M1 = 6.0? 100 times 2 times 50 timesarrow_forwardUse the Richter scale r=log 1/i0 to find the intensity of the following earthquakes (let i0=1) a. magnitude 7.6 earthquake in Peru (2015) b. Magnitude 5.5 earthquake in Pakistan c how many times more intense was the earthquake in Peru compared to the one in Pakistanarrow_forward
- earthquake intensity measured by I = Io x 10^m, Io is reference intensity and M is magnitude. An earthquake measuring 6.1 on the Richter scale is 125 times less intense than the second earthquake. What would the Richter scale measure be for the second earthquake?arrow_forwardIf you wanted to live where the chances of a destructive earthquake were small, would you pick a location near a fault zone, near a mid ocean ridge, near a subduction zone, or on a volcanic island such as Hawaii? What are the relative risks of earthquakes at each of these locations?arrow_forwardIf A is the amplitude of an earthquake (measured in micrometers), and P is the period (measured in seconds), then the intensity of the earthquake is measured by the formula R =arrow_forward
- 8. The energy released đuring an earthquake can be calculated using the formula E(M) =(10'")“, where E is the energy in kWh (kilowatt hours) and M is the magnitude of the carthquake. a. The magnitude 9.5 earthquake in Southern Chile on May 22, 1960 is thought to be the strongest earthquake that has ever occurred. Use the formula above to caleulate the energy released during this earthquake. Express the answer in scientific notation, to the nearest tenth. b. An earthquake of magnitude 3 may not be felt or noticed by most people. Calculate the energy, to the nearest tenth, that is released during an earthquake of this strength. ( c. Compared to a magnitude 3 carthquake, how many times greater was the energy that was released during the 1960 earthquake in Chile? d. An earthquake that occurred in Central Canada in 2010 released approximately 30 000 000 kWh energy. Find the magnitude, to the nearest whole number, associated with this carthquake.arrow_forwardEarth's mass ia 6x10^24 kg and its radius is 6.4x10^6 m. What is the average mass density of Earth? The density of the rocks compromising Earth's outermost layer (its "crust") ranges from 2000 to 3500 kg/m ^3. Based on your answer, what can you conclude about the material deep inside Earth's interior?arrow_forwardA seismic survey is conducted in a region with two layers. The top layer is shale, with density 2500 kg/m3, and seismic velocity of 2900m/s, and the bottom layer is sandstone, with a density of 2100 kg/m3, and a seismic velocity of 3000m/s. The reflection coefficient will bea. Positiveb. Negativec. Zerod. Not enough informationarrow_forward
- A formula for calculating the magnitude of an earthquake is M = 2log B that uses the common (base 10) logarithm. This is called the Moment Magnitude Scale (MMS), an alternative to the more well known Richter Scale. One earthquake has magnitude 3.9 on the MMS. If a second earthquake has 650 times as much energy as the first, find the magnitude of the second quake. Round to the nearest hundredth. The magnitude of the second earthquake was Numberarrow_forwardHEIGHT OF A CONTINENT ABOVE THE MANTLE. In the figure below, a simple model considers a continent as a block (density = 2,800 kg/m^3) floating in the mantle (density = 3,300 kg/m3). Assuming the continent is 35 km thick (the average thickness of the Earth's crust), estimate the height (in km) of the continent above the surrounding mantle. Continent (density = 2800 kg/m3) mg Mantle rock (density = 3300 kg/m³) 5.3. 7.4. 9.8 12. 17.arrow_forwardHow are earthquakes in Hawaii different from those in Southern California?arrow_forward
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