Conceptual Physical Science - Access
6th Edition
ISBN: 9781323459720
Author: Hewitt
Publisher: PEARSON
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Textbook Question
Chapter 21, Problem 6RAT
Earthquakes are caused by the
- (a) friction between diverging plates.
- (b) sudden release of energy that is stored elastically in deformed rocks.
- (c) expansion of Earth’s crust.
- (d) isostasy.
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The Richter scale describes how much energy an earthquake releases. With every increase of 1.0 on the scale, 32 times more energy is released. How many times more energy would be released by a quake measuring 2.0 more units on the Richter scale?
How far from a seismic station did an earthquake occur if S-waves arrived there 7 minutes after P-waves. (You may assume that P- and S-waves travel at speeds of 5 km/s and 3 km/s, respectively).
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…
Chapter 21 Solutions
Conceptual Physical Science - Access
Ch. 21 - How do P-waves travel through Earths interior? How...Ch. 21 - Can S-waves travel through liquids?.Ch. 21 - Prob. 3RCQCh. 21 - What was the major contribution of Andrija...Ch. 21 - How did seismic waves contribute to the discovery...Ch. 21 - What is the evidence that Earths inner core is...Ch. 21 - What is the evidence that Earths outer core is...Ch. 21 - In what ways are the asthenosphere and the...Ch. 21 - How does continental crust differ from oceanic...Ch. 21 - Why does continental crust stand higher on the...
Ch. 21 - Prob. 11RCQCh. 21 - Prob. 12RCQCh. 21 - Prob. 13RCQCh. 21 - Where are the deepest parts of the ocean?Ch. 21 - Prob. 15RCQCh. 21 - How is the ocean floor similar to a gigantic,...Ch. 21 - Prob. 17RCQCh. 21 - Name and describe the three types of plate...Ch. 21 - The lithosphere moves because of convection...Ch. 21 - What is a rift? Give an example.Ch. 21 - Prob. 21RCQCh. 21 - Prob. 22RCQCh. 21 - What is a transform boundary?Ch. 21 - Are folded rocks primarily the result of...Ch. 21 - Distinguish between anticlines and synclines.Ch. 21 - What is the difference between reverse faults and...Ch. 21 - Prob. 27RCQCh. 21 - What happens to rock when stress exceeds a rocks...Ch. 21 - Where are most of the worlds volcanoes formed?Ch. 21 - Prob. 30RCQCh. 21 - Prob. 34TASCh. 21 - Prob. 35TASCh. 21 - The Richter magnitude scale is logarithmic,...Ch. 21 - If the rate of movement along a fault is known,...Ch. 21 - The San Andreas Fault separates the...Ch. 21 - Prob. 39TARCh. 21 - Prob. 40TARCh. 21 - Prob. 41TARCh. 21 - Prob. 42TARCh. 21 - Prob. 43TARCh. 21 - Prob. 44ECh. 21 - How can seismic waves indicate whether regions...Ch. 21 - How do seismic waves indicate layering of...Ch. 21 - What does the P-wave shadow tell us about Earth's...Ch. 21 - What is the evidence that Earth's inner core is...Ch. 21 - Even though the inner and outer cores are both...Ch. 21 - If Earth's mantle is composed of rock, how can we...Ch. 21 - Prob. 51ECh. 21 - Prob. 52ECh. 21 - Prob. 53ECh. 21 - Prob. 54ECh. 21 - Prob. 55ECh. 21 - Where and what is the most likely source of the...Ch. 21 - Prob. 57ECh. 21 - Prob. 58ECh. 21 - How is Earth's crust like a conveyor belt?Ch. 21 - Upon crystallization, certain minerals (the most...Ch. 21 - What is meant by magnetic pole reversals? What...Ch. 21 - How are the theories of seafloor spreading and...Ch. 21 - Prob. 63ECh. 21 - Distinguish between continental drift and plate...Ch. 21 - Why are the most ancient rocks found on the...Ch. 21 - What kinds of plate boundaries are associated with...Ch. 21 - Prob. 67ECh. 21 - At what type of plate boundary were the...Ch. 21 - Prob. 69ECh. 21 - Prob. 71ECh. 21 - Magma is generated at divergent and convergent...Ch. 21 - Prob. 73ECh. 21 - Prob. 74ECh. 21 - Prob. 75ECh. 21 - Lithospheric rock is continuously created and...Ch. 21 - Subduction is the process of one lithospheric...Ch. 21 - Where does most of an earthquakes damage generally...Ch. 21 - What type of fault is associated with the 1964...Ch. 21 - The Mercalli scale measures earthquake intensity....Ch. 21 - How do faults and folds support the idea that...Ch. 21 - Why are most earthquakes generated near plate...Ch. 21 - Prob. 83ECh. 21 - Prob. 84ECh. 21 - What is the direct source of energy responsible...Ch. 21 - Prob. 86ECh. 21 - Prob. 87ECh. 21 - Strike-slip faults show horizontal motion. Where...Ch. 21 - If you found folded beds of sedimentary rock in...Ch. 21 - In an earthquake, does the release of energy...Ch. 21 - Are the present-day ocean basins a permanent...Ch. 21 - Are the present-day continents a permanent feature...Ch. 21 - Prob. 93ECh. 21 - Prob. 94ECh. 21 - During an earthquake, what type of land surface is...Ch. 21 - Prob. 96DQCh. 21 - As global temperatures increase, the polar ice...Ch. 21 - The FYI about the 2010 Chilean earthquake suggests...Ch. 21 - What clues can we use to recognize the boundaries...Ch. 21 - At divergent boundaries, basaltic magma is...Ch. 21 - The hypothesis of continental drift is not...Ch. 21 - Prob. 3RATCh. 21 - Prob. 4RATCh. 21 - Prob. 5RATCh. 21 - Earthquakes are caused by the (a) friction between...Ch. 21 - Seafloor spreading provided a driving force for...Ch. 21 - Prob. 8RATCh. 21 - Prob. 9RATCh. 21 - Rocks buckle and fold when subjected to (a)...
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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
- If 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_forwardWhat is the source of Earth’s magnetic field?arrow_forwardHow is the root cause of earthquakes in Hawaii different from earthquakes in Southern California?arrow_forward
- With the information from Exercise 8.25, you can calculate the average age of the ocean floor. First, find the total area of the ocean floor (equal to about 60% of the surface area of Earth). Then compare this with the area created (or destroyed) each year. The average lifetime is the ratio of these numbers: the total area of ocean crust compared to the amount created (or destroyed) each year.arrow_forwardWhat is the drift rate of the Pacific plate over the Hawaiian hot spot?arrow_forwardThe 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…arrow_forward
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