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They hydrologic cycle ___.
Describes a primary mechanism of the movement of energy as well as the movement of water from one part of the globe to another.
What proportion of the Earth's surface water is fresh water found in streams, lakes, and wetlands?
Less than 1 percent.
Hydraulic conductivity (permeability) characterizes the ___.
Ease with which a geologic material can move or transmit water.
In the unsaturated zone above a water table, pore spaces in a soil and rock contain ___.
Both air and water.
If the amount of discharge from an aquifer exceeds the amount of its recharge, the water table ____.
Which of the following statements about the water table is true?
The water table has the same general shape as the topography.
Mechanical weathering ___.
Reduces solid rock to small fragments without altering the chemical composition of rocks and minerals.
Weathering is the decomposition and disintegration of rocks and minerals at the Earth's surface by ___.
Both mechanical and chemical processes.
Piles of talus found at the base of cliffs in high alpine area are likely the result of ___.
Near the base of a glacier the ice is ___.
Relatively plastic and often warm enough so that free water may flow along bedrock.
The higher elevation portion of a glacier where more snow accumulates in winter than melts in summer is called ___.
The zone of accumulation.
Imagine that a long-lasting glacier melted and a stream replaced the ice in the valley floor. After many years the valley shape could be best described as a ___.
Valley that looks like a V cut into the bottom of a U.
Which one of the following applies to a valley glacier that lengthens over a period of many years?
Accumulation exceeds wastage.
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