5. The "iceberg analogy" for the isostatic equilibrium of the continental crust turns out to be quite the relative density of icebergs versus seawater is close to the relative density of continental crust versus mantle. Glacial ice is about 15% less dense than seawater; likewise continental crust is about 15% less dense than the mantle. This leads to a simple rule that we can call the 1-to-8 rule: for every 1 unit of extra elevation for an iceberg or a mountain belt, there need to be 8 units of total thickness. These iceberg examples illustrate the idea: an iceberg 3 meters above sea level is 24 meters thick an iceberg 1 meter above sea level is 8 meters thick an iceberg 2 meters above sea level is 16 meters thick 3m 2m water level 1m >7m 14m 21m For the following questions, apply the 1-to-8 rule, assuming continental crust in isostatic equilibrium. a. Continental crust at sea level averages about 35 kilometers thick. (1 km = 0.6 miles.) Therefore, in general, how thick must the crust be to support a: 1-kilometer high mountain belt? km 2-kilometer high mountain belt? km 5-kilometer high mountain belt? km

5. The "iceberg analogy" for the isostatic equilibrium of the continental crust turns out to be quite the relative density of icebergs versus seawater is close to the relative density of continental crust versus mantle. Glacial ice is about 15% less dense than seawater; likewise continental crust is about 15% less dense than the mantle. This leads to a simple rule that we can call the 1-to-8 rule: for every 1 unit of extra elevation for an iceberg or a mountain belt, there need to be 8 units of total thickness. These iceberg examples illustrate the idea: an iceberg 3 meters above sea level is 24 meters thick an iceberg 1 meter above sea level is 8 meters thick an iceberg 2 meters above sea level is 16 meters thick 3m 2m water level 1m >7m 14m 21m For the following questions, apply the 1-to-8 rule, assuming continental crust in isostatic equilibrium. a. Continental crust at sea level averages about 35 kilometers thick. (1 km = 0.6 miles.) Therefore, in general, how thick must the crust be to support a: 1-kilometer high mountain belt? km 2-kilometer high mountain belt? km 5-kilometer high mountain belt? km

Similar questions

#55
You have 100 pounds of wood and 100 pounds of rocks. What is true about these substances? a) The wood has a higher density and takes up more volume. b) The wood has a higher density and takes up less volume. c) The rocks have a higher density and takes us more volume. d) The rocks have a higher density and takes up less volume.
cal Science-SC5 X + ive r19.core.learn.edgenuity.com/player/ mental Science - SC5181 A < 21 90 The graph shows the changes in global temperatures over time. Estimated global temperature over the last 500 million years equatorial Pangea too hot for peat swamps Maa 500 450 23 24 25 Mark this and return 400 350 300 250 200 millions of years ago Cretaceous Hot Greenhouse world without polar ice caps Paleocene- Eocene Thermal Maximum world with polar ice caps (Courtesy of NASA) Which of the following hypotheses is supported by the data analysis? O Earth's temperature has natural cycles throughout history. Humans have caused all of Earth's temperature changes DELL 150 100 50 Today Adapted from Smithsonian Institution Save and Exit Next
réptilés d. all) of these 7. The development of ozóne in the stratosphere and oxygen in the atmosphere first made possible the development of a. complex organisms b. single-cell organisms c. cyanobacteria d. all of these 8. Today, many scientists think that a. 'birds evolved from dinosaurs b. dinosaurs evolved from reptiles c. birds evolved from amphibians d. both a andb 9. Ediacaran organisms first appeared during the a. Precambrian Time b. Cambrian Period c. Permian Period d. none of these 10. As a. cyanobacteria b. trilobites evolved, they changed Earth's atmosphere by producing oxygen. c. reptiles d. dinosaurs Geologic Time
What is remanent magnetism? How can it be used to track the movement of continents over time?