Unit 45 Review Questions

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. Which region has the greatest extent of mountain glaciers?

The Rocky Mountains in North America correct incorrect

The European Alps correct incorrect

The Andes mountain range correct incorrect

The highlands of south-central Asia correct incorrect

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. What is the typical shape of a valley that experienced substantial glaciation in its upper region?

U-shaped in both the upper region and the lower region correct incorrect

V-shaped in both the upper region and the lower region correct incorrect

U-shaped in the upper region and V-shaped in the lower region correct incorrect

V-shaped in the upper region and U-shaped in the lower region correct incorrect

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. A hanging valley:

cannot contain a cirque correct incorrect

is usually V-shaped correct incorrect

is the remnant of a tributary glacier correct incorrect

will not show evidence of lateral moraines correct incorrect

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. Headward erosion of mountain glaciers forms all of the following features, EXCEPT:

rock steps correct incorrect

arêtes correct incorrect

cirques correct incorrect

horns correct incorrect

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. A medial moraine:

can never meet a terminal moraine correct incorrect

begins where the zone of accumulation meets the zone of ablation correct incorrect

begins where a tributary glacier meets a trunk glacier correct incorrect

is a specific form of recessional moraine correct incorrect

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. In a typical mountain glacier landscape, you would usually expect a lake located here to have the highest elevation:

in a tarn correct incorrect

where a rock step sits just above a glacial trough correct incorrect

in a glacial trough correct incorrect

in a nonglaciated valley correct incorrect

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. A glacial trough that extends below sea level is a:

marginal lake correct incorrect

fjord correct incorrect

hanging valley correct incorrect

tarn correct incorrect