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Unformatted text preview: buried snow into glacial ice with a depth great enough for the ice to flow. Glaciers are sometimes classified by temperature as fasterflowing temperate glaciers or as slowerflowing polar glaciers.
3. The word match in the passage is closest in meaning to
4. The word transform in the passage is closest in meaning to
5. According to paragraph 2, surplus snow affects a glacier in all the following ways EXCEPT:
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○It provides the pressure needed to cause glacial ice to flow.
○It offsets losses of ice due to melting, evaporation, and calving.
○It brings about the formation of fern in the snow it buries.
○It results in temperate glaciers that are thicker than polar glaciers.
6. Paragraph 2 implies that which of the following conditions produces the fastest moving glaciers?
○A climate characteristic of the polar regions ○A thick layer of ice in a temperate climate F Long, ○Warm summers
○Snow, firm and ice that have been buried for several years
Paragraph3: Glaciers are part of Earth's hydrologic cycle and are second only to the oceans in the total amount of water contained. About 2 percent of Earth's water is currently frozen as ice. Two percent may be a deceiving figure, however, since over 80 percent of the world's freshwater is locked up as ice in glaciers, with the majority of it in Antarctica. The total amount of ice is even more awesome if we estimate the water released upon the hypothetical melting of the world's glaciers. Sea level would rise about 60 meters. This would change the geography of the planet considerably. In contrast, should another ice age occur, sea level would drop drastically. During the last ice age, sea level dropped about 120 meters.
7. The word deceiving in the passage is closest in meaning to
8. Why does the author consider the hypothetical melting of the world's glaciers ?
○To contrast the effects of this event with the opposite effects of a new ice age
○To emphasize how much water is frozen in glaciers
○To illustrate the disastrous effects of a warming trencl
○To support the claim that glaciers are part of Earth' s hydrologic cycle
9. The discussion in paragraph 3 answers all the following questions EXCEPT:
○Where is most of Earth's freshwater?
○What effect would a new ice age have on sea levels?
○What is the total amount of water in Earth's oceans?
○How much of Earth's water is in ice?
Paragraph4: When snowfalls on high mountains or in Polar Regions, it may become part of the glacial system. Unlike rain, which returns rapidly to the sea or atmosphere, the snow that becomes part of a glacier is involved in a much more slowly cycling system. Here water may be stored in ice form for hundreds or even hundreds of thousands of years before being released again into the liquid water system as meltwater. In the meantime', however, this ice is not static laciers move slowly across the land with tremendous energy, carvin...
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This note was uploaded on 09/17/2013 for the course LANGUAGE 13DL208 taught by Professor Wang during the Fall '13 term at East China Normal University.
- Fall '13