Explain how the front of a glacier can move upslope in a retreating valley glacier if the ice is continually moving downslope.
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Q. 2 - What is a glacier? What features distinguish the three types of glaciers?
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Q. 3 - Use your own words to describe the zones of accumulation and wastage. How does the snowline elevation change if climate changes?
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Q. 4 - What two conditions must be met for a glacier to form?
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Q. 5 - During the most recent glacial advance, which peaked at 21,000 years ago, how much of North America was covered with ice?
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Q. 6 - Describe the features left behind after an ice sheet retreats from a region.
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Q. 7 - Water is a very reactive chemical compound. Explain how chemical reactions between ground water and minerals affect drinking-water quality, rock formation, mineral-resource formation, and development of landscapes.
In this short essay, explain why ground-water chemistry tends to be very different from surface-water chemistry.
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