PHYSICAL SCIENCE (LCPO)
12th Edition
ISBN: 9781265774660
Author: Tillery
Publisher: MCG
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Textbook Question
Chapter 20, Problem 8AC
A mixture of unconsolidated weathered earth materials and humus is
a. gravel.
b. soil.
c. dirt.
d. mud.
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Chapter 20 Solutions
PHYSICAL SCIENCE (LCPO)
Ch. 20 -
1. Small changes that result in the breaking up,...Ch. 20 -
2. The process of physically removing weathered...Ch. 20 -
3. Muddy water rushing downstream after a heavy...Ch. 20 -
4. The physical breakup of rocks without any...Ch. 20 -
5. Chemical weathering, the dissolving or...Ch. 20 -
6. The process of peeling off layers of rock,...Ch. 20 - Prob. 7ACCh. 20 -
8. A mixture of unconsolidated weathered earth...Ch. 20 -
9. Decay-resistant, altered organic material...Ch. 20 -
10. Two minerals that usually remain after...
Ch. 20 -
11. Weathered materials move to lower elevations...Ch. 20 -
12. The slow movement downhill of soil on the...Ch. 20 -
13. The wide, level floor of a valley built by a...Ch. 20 -
14. The deposit at the mouth of a river where...Ch. 20 -
15. Rock fragments frozen in moving glacier ice...Ch. 20 -
16. The agent that has the least ability to...Ch. 20 - Prob. 17ACCh. 20 - Prob. 18ACCh. 20 -
19. What is the pH of natural rainwater?
a. 5.0...Ch. 20 -
20. Freezing water exerts pressure on the wall...Ch. 20 -
21. Of the following rock weathering events, the...Ch. 20 -
22. Which of the following would have the...Ch. 20 -
23. Broad meanders on a very wide, gently sloping...Ch. 20 - Prob. 24ACCh. 20 -
25. A likely source of loess is
a. rock...Ch. 20 -
26. The landscape in a dry climate tends to be...Ch. 20 -
27. Peneplains and monadnocks are prevented from...Ch. 20 -
28. The phrase weathering of rocks means
a. able...Ch. 20 -
29. What are you doing to a rock if you pick up...Ch. 20 -
30. What are you doing to the fragments of a...Ch. 20 -
31. What are you doing to a rock if you dissolve...Ch. 20 - Prob. 32ACCh. 20 -
33. The soil called loam is
a. all sand and...Ch. 20 -
34. A moraine is a
a. wind deposit.
b. glacier...Ch. 20 -
35. The breaking up, crumbling, chemical...Ch. 20 -
36. Crushing of rock at a quarry to make...Ch. 20 -
37. Fragments of rocks fall into a mountain...Ch. 20 -
38. Tree roots grow and expand, and eventually...Ch. 20 -
39. Damage to the Lincoln Memorial by rain and...Ch. 20 -
40. Ferromagnesian minerals will react with...Ch. 20 -
41. You are planning a garden and need a soil...Ch. 20 - Prob. 42ACCh. 20 -
43. The most extensive glaciers in the United...Ch. 20 -
44. Continental glaciers are found...Ch. 20 -
45. An example of a chemical weathering process...Ch. 20 - Prob. 1QFTCh. 20 -
2. Granite is the most common rock found on...Ch. 20 -
3. What other erosion processes are important as...Ch. 20 -
4. Describe three ways in which a river erodes...Ch. 20 - Prob. 5QFTCh. 20 - Prob. 6QFTCh. 20 -
7. What is a glacier? How does a glacier erode...Ch. 20 -
8. What is rock flour and how is it produced?
Ch. 20 -
9. Could a glacier erode the land lower than sea...Ch. 20 -
10. Explain why glacial erosion produces a...Ch. 20 - Prob. 11QFTCh. 20 - Prob. 12QFTCh. 20 -
13. What essential condition must be met before...Ch. 20 -
14. Compare the features caused by stream...Ch. 20 -
15. Compare the materials deposited by streams,...Ch. 20 -
16. Why do certain stone buildings tend to...Ch. 20 - Prob. 17QFTCh. 20 -
18. Discuss all the reasons you can in favor of...Ch. 20 - Prob. 1FFACh. 20 -
2. Speculate whether the continents will ever be...Ch. 20 - Prob. 3FFACh. 20 - Prob. 1PEACh. 20 - Prob. 2PEACh. 20 - Prob. 3PEACh. 20 - Prob. 4PEACh. 20 - Prob. 5PEACh. 20 - Prob. 6PEACh. 20 - Prob. 7PEACh. 20 - Prob. 8PEACh. 20 - Prob. 9PEACh. 20 - Prob. 10PEACh. 20 - Prob. 11PEACh. 20 - Prob. 12PEACh. 20 - Prob. 13PEACh. 20 - Prob. 14PEACh. 20 - Prob. 15PEACh. 20 - Prob. 1PEBCh. 20 -
2. The average rate of chemical weathering of...Ch. 20 -
3. A slope is creeping at a rate of 1.2 mm/yr. A...Ch. 20 - Prob. 4PEBCh. 20 - Prob. 5PEBCh. 20 - Prob. 6PEBCh. 20 -
7. The elevation of a streambed is surveyed near...Ch. 20 -
8. Each year, sheet erosion removes 0.9 mm of...Ch. 20 - Prob. 9PEBCh. 20 - Prob. 10PEBCh. 20 -
11. The discharge (Q) of a stream is the velocity...Ch. 20 -
12. What is the velocity (v) of a stream with a...Ch. 20 - Prob. 13PEBCh. 20 -
14. A 1998 survey of glacial end moraines...Ch. 20 -
15. Rates of tectonic uplift can be determined...
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- How does sedimentary rock from the ocean floor sometimes end up in highland and mountainous regions on the Earth? (22.5) (a) Sedimentary rock is commonly made inside volcanoes. (b) Wind and water carry the sediment to the mountaintops. (c) It is believed that asteroid impacts probably caused the sedimentary rock to move great distances. (d) The sedimentary rock was uplifted by powerful forces to form mountain chains.arrow_forward13. How deep in the crust is 10 kbar? Lithostatic pressure within the crusts results from the weight of the rocks above. Assume an average density of 2750 kg/m3. Use the equation P=p*g*h or P/(p *g)=h 23kPa/m P=pressure (e.g. kbar), p=density, g-gravity 9.8 m/s2, h= depth (m), 1 kbar=1,000 bars, 1 bar=100,000 Pa, 1 Pa=kg/(m*s2), 1 kbar =100,000,000 Pa, 1 km =1000 m. Give your answer in kilometers.arrow_forward12. Which part of the earth makes up about one-third of earth’s total mass and is mostly iron witha solid part and a part that acts like a liquid?A. mantle B. core C. crust D. asthenospherearrow_forward
- True or False 1. If a well is drilled into a confined aquifer, the water can rise above its level in the aquifer because of the extra hydrostatic (fluid) pressure; which is called an artesian system. The water in an artesian system will rise all the way to the ground surface. 2. In areas suffered from surface subsidence, solutions such as pumping water back underground are likely to work.arrow_forward11. Which part of the Earth is a hot, elastic semi-liquid layer that extends around the entire Earth?A. crust B. core C. mantle D. asthenospherearrow_forwardb. Under what condition is a material or a rock mass considered to: i. Have positive Poisson’s ratio ii. Have negative Poisson’s ratio iii. Possess planar discontinuity iv. Exhibit positive deformation v. Exhibit negative deformation?arrow_forward
- Chemical weathering can be determined by analyzing what property of a rock? (23.1) (a) temperature (b) density (c) composition (d) massarrow_forwardA specimen of shale has a mass of 17.25 g dry and 22.24 g wet. The volume of the specimen is 12.15 cm3. What is the porosity of the shale?arrow_forwardAn earthquake has an intensity of 1071 x lo. What is its magnitude using the Richter scale? А. 2.9 в. 7.1 C. 8.5 D. 10 - What is the pH of an aqueous solution when the concentration of hydrogen ion is 6.5 x 10-5 M? A. 4.19 В. 5.05 C. 5.65 D. 6.50arrow_forward
- 1arrow_forward5. 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…arrow_forward136. What would be the porosity of a soil having a bulk density of 2000 kg/m^3?arrow_forward
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