Modified Mastering Geography With Pearson Etext -- Standalone Access Card -- For Physical Geography Laboratory Manual (12th Edition)
12th Edition
ISBN: 9780134610634
Author: Darrel Hess
Publisher: PEARSON
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Question
Chapter 15, Problem 1LC
To determine
The main effect of weathering and of mass wasting on the landscape.
Expert Solution & Answer
Answer to Problem 1LC
Weathering leaves the landscape with broken fragments of rocks while mass wasting leaves a scar on the surface where it occurred and a bulk of debris at the bottom of the slope where the movement ceased.
Explanation of Solution
Weathering defines the in-situ process of fragmentation of rocks into even smaller pieces under the effect of some physical, chemical or biological agents. Since it causes the rocks to break down, the landscape where weathering has taken place will have numerous smaller fragments of rocks and less cohesion between them. Weathering reduces the cohesion within the composing particles of the rock to break them down.
Mass wasting is different from weathering in the sense that the former is not an in-situ phenomenon. Mass wasting describes the downslope movement of the weathered and weakly held particles of a slope under the influence of gravity. Sometimes, the materials are taken to some or a comparatively large distance, from their source area through mass wasting. It leaves a noticeable open scar on the slope from where it had begun and deposits of debris are found at the base of the slope until which the movement occurred.
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Ap
Retreating
glacier
Bedrock
Till
Stratified
drift
▲ Figure 9.7 This diagram showing common depositional landforms depicts a hypothetical area affected by ice
sheets in the recent geologic past. (Drumlin photo courtesy of Ward's Natural Science Establishment; esker photo by Richard P. Jacobs/
JLM Visuals; kame photo by John Dankwardt; kettle lake photo by Carlyn Iverson/Science Source)
Figure 9.9 is a stereogram showing a portion of the area covered by the Whitewater, Wisconsin, topographic map (Figure 9.10, page 160). Use the stereogram and the map to complete the following.
7. The streamlined, asymmetrical hills composed of till, labeled B, are what type of feature?
8. Examine the shape of the features labeled B on the map in Figure 9.10. How can these features be used to determine the direction of ice flow in a glaciated area?
9. Using the features labeled B in Figure 9.10 as a guide, draw an arrow on the map to indicate the direction of ice movement that occurred in this region.
10. What is the likely location of the outwash plain on the map? Identify and label the area "outwash plain." (Hint: Refer to Figure 9.7.)
11. Label the area covered by ground moraine.
12. What term is applied to the numerous almost circular depressions designated with the letter C?
Chapter 15 Solutions
Modified Mastering Geography With Pearson Etext -- Standalone Access Card -- For Physical Geography Laboratory Manual (12th Edition)
Ch. 15 - Prob. 1LCCh. 15 - Prob. 2LCCh. 15 - Prob. 3LCCh. 15 - Prob. 4LCCh. 15 - Prob. 5LCCh. 15 - Prob. 6LCCh. 15 - Prob. 7LCCh. 15 - Prob. 8LCCh. 15 - Prob. 9LCCh. 15 - Prob. 10LC
Ch. 15 - Prob. 11LCCh. 15 - Prob. 12LCCh. 15 - Prob. 13LCCh. 15 - Prob. 14LCCh. 15 - Prob. 1KTCCh. 15 - Prob. 2KTCCh. 15 - Prob. 3KTCCh. 15 - Prob. 4KTCCh. 15 - Prob. 5KTCCh. 15 - Prob. 6KTCCh. 15 - Prob. 7KTCCh. 15 - Prob. 8KTCCh. 15 - Prob. 9KTCCh. 15 - Prob. 10KTCCh. 15 - Prob. 11KTCCh. 15 - Prob. 12KTCCh. 15 - Prob. 13KTCCh. 15 - Prob. 14KTCCh. 15 - Prob. 15KTCCh. 15 - Prob. 16KTCCh. 15 - Prob. 17KTCCh. 15 - Prob. 18KTCCh. 15 - Prob. 19KTCCh. 15 - Prob. 20KTCCh. 15 - Prob. 21KTCCh. 15 - Prob. 22KTCCh. 15 - Prob. 23KTCCh. 15 - Prob. 24KTCCh. 15 - Prob. 1SQCh. 15 - Prob. 2SQCh. 15 - Prob. 3SQCh. 15 - Prob. 4SQCh. 15 - Prob. 5SQCh. 15 - Prob. 1ECh. 15 - Prob. 2ECh. 15 - Prob. 3E
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