Exam 6: Water on Earth

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The largest sector of daily water withdrawals in the water budget for the United States is presently that taken for agricultural purposes.

(True/False)
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The portion of streamflow that consists of groundwater is known as

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Define the following: soil-moisture storage,hygroscopic water,wilting point,capillary water,field capacity,gravitational water,soil-moisture recharge,soil porosity,and soil permeability.

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Which of the following is NOT a cited benefit of Chinaʹs Three Gorges Dam on the Yangtze River?

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When the soil is saturated,additional inputs of water may puddle on the surface or flow downslope as overland flow.

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A drought defined by the degree of dryness as compared to a regional average and the duration of dryness is a(n)

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Which of the following is TRUE regarding the hydrologic cycle?

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A water-bearing rock stratum is called a(n)

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By volume,the Pacific Ocean is the largest ocean basin.

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Describe the location and percentage of all water on Earth.Where are the largest repositories; where are the smallest repositories?

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Approximately_______ countries are currently experiencing water shortages.

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The largest reservoir in the world by volume is

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Other than ice sheets and glaciers,the largest repository of fresh water is located in

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Draw and label a diagram of the hydrologic cycle.

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Precipitation that falls directly to the ground is known as

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_______occurs when precipitation lands on vegetation or other land cover before reaching the surface.

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Soil moisture deficits are frequently overcome by irrigation in the arid and semi-arid agricultural regions of the world.

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The water table in the High Plains aquifer has dropped more than 30m (100 ft)in the last five decades.

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Some of Earthʹs water supply originated from

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Oceans and land surface are distributed evenly on Earth.

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