Universe
11th Edition
ISBN: 9781319039448
Author: Robert Geller, Roger Freedman, William J. Kaufmann
Publisher: W. H. Freeman
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Chapter 9, Problem 1CLC
To determine
The time taken by Africa and South America to move apart so as to create the Atlantic Ocean, which has a width of about 600 million centimeters (cm), if the seafloor is spreading apart at a rate of 2 cm per year.
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The Greenland ice sheet extends 1.7e12 m2, and average 2,100 meter thick. The area of the world oceans is 360e12 m2. Assume ice and water have about the same density. The sea level will rise _____ meter if the Greenland ice sheet is all melted.
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7.4.
9.8
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17.
as the pacific tectonic plate subducts under the philippine plate. south america is drifting closer to asia at a rate of approximately 4 centimeters per year. if this drift rate remains constant how much closer will asia and south america be to one another 100 million years from now?
Chapter 9 Solutions
Universe
Ch. 9 - Prob. 1CCCh. 9 - Prob. 2CCCh. 9 - Prob. 3CCCh. 9 - Prob. 4CCCh. 9 - Prob. 5CCCh. 9 - Prob. 6CCCh. 9 - Prob. 7CCCh. 9 - Prob. 8CCCh. 9 - Prob. 9CCCh. 9 - Prob. 10CC
Ch. 9 - Prob. 11CCCh. 9 - Prob. 12CCCh. 9 - Prob. 13CCCh. 9 - Prob. 14CCCh. 9 - Prob. 1CLCCh. 9 - Prob. 2CLCCh. 9 - Prob. 3CLCCh. 9 - Prob. 1QCh. 9 - Prob. 2QCh. 9 - Prob. 3QCh. 9 - Prob. 4QCh. 9 - Prob. 5QCh. 9 - Prob. 6QCh. 9 - Prob. 7QCh. 9 - Prob. 8QCh. 9 - Prob. 9QCh. 9 - Prob. 10QCh. 9 - Prob. 11QCh. 9 - Prob. 12QCh. 9 - Prob. 13QCh. 9 - Prob. 14QCh. 9 - Prob. 15QCh. 9 - Prob. 16QCh. 9 - Prob. 17QCh. 9 - Prob. 18QCh. 9 - Prob. 19QCh. 9 - Prob. 20QCh. 9 - Prob. 21QCh. 9 - Prob. 22QCh. 9 - Prob. 23QCh. 9 - Prob. 24QCh. 9 - Prob. 25QCh. 9 - Prob. 26QCh. 9 - Prob. 27QCh. 9 - Prob. 28QCh. 9 - Prob. 29QCh. 9 - Prob. 30QCh. 9 - Prob. 31QCh. 9 - Prob. 32QCh. 9 - Prob. 33QCh. 9 - Prob. 34QCh. 9 - Prob. 35QCh. 9 - Prob. 36QCh. 9 - Prob. 37QCh. 9 - Prob. 38QCh. 9 - Prob. 39QCh. 9 - Prob. 40QCh. 9 - Prob. 41QCh. 9 - Prob. 42QCh. 9 - Prob. 43QCh. 9 - Prob. 44QCh. 9 - Prob. 45QCh. 9 - Prob. 46QCh. 9 - Prob. 47QCh. 9 - Prob. 49QCh. 9 - Prob. 51QCh. 9 - Prob. 52Q
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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
- What evidence can you give that the Atlantic Ocean is growing wider?arrow_forwardWhat is the Mid-Atlantic Ridge?arrow_forwardExplain briefly how the following phenomena happen on Earth, relating your answers to the theory of plate tectonics A. earthquakes B. continental drift C. mountain building D. volcanic eruptions E. creation of the Hawaiian island chainarrow_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_forwardThe glaciers of Greenland have a total area of approximately 18 × 10^12 ft^2 and an average depth of 1.0 mile. What is the volume of water that would be released if all the glaciers were to melt? Given that oceans cover 70% of planet earth and the earth radius is approximately 6,371 kilometers, how much would ocean levels rise? (Neglect differences in the density between ice and water and changes in ocean coverage upon rising sea levels)arrow_forwardAntarctica is roughly semicircular in shape, with a radius of 2000 km. The average thickness of the ice cover is 3000 m. How many metric tons (1metric ton = 1000 kg) of ice cover Antarctica? (Consider: density of ice = 0.919 gram per cubic centimeter)arrow_forward
- If the Atlantic sea floor is spreading at 3.0 cm/yr and is now 6400 km wide, how long ago were the continents in contact? How does that time span compare to the age of the Earth?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_forwardAccording to the infographic above, one of the largest earthquakes of this year 2021 was the magnitude 8.2 Earthquake in Alaska on 29 July 2021. Earthquakes represent a release of energy as a result of the earth's tectonic plates. a) Determine the amount of energy release in ergs. b) Determine the energy release in Joules. ( Hint use the earthquake formula M = 2/3 log (E/ 10^11.8); where M is the earthquake magnitude and E is the energy of the earthquake in ergs (recall 1 erg = 10^-7 Joules)). c) Using the earthquake magnitude scale below to qualitatively categorize (was it Minor, Light, Moderate, Strong, Major or Great) and describe the earthquake (what kind of damage is expected from a magnitude 7.1 earthquake)arrow_forward
- An earthquake occurs 6,875 km from a seismograph. The P-waves arrive 11.6 minutes later. How fast is the P-wave traveling (in km/s)? If the lag time between P- and S-waves is 10.8 minutes, how fast are the S-waves traveling (in km/s)? Using the shadow of S-waves you determine that the radius of the core is 55% of the Earth's 6,378-km radius. How many kilometers from the surface is this (in km)? To calculate how fast the P-waves are traveling, we need to divide the distance the waves travel by the time. vP = d s vP = km/sarrow_forwardOver the entire Earth, there are 60,000 km of active rift zones, with average separation rates of 5 m/ century. How much area of new ocean crust is created each year over the entire planet? (This area is approximately equal to the amount of ocean crust that is subducted since the total area of the oceans remains about the same.)arrow_forwardWhich is the most geologically active Terrestrial world? Why?arrow_forward
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