The Water Cycle And Water Insecurity Exam With Answers (32 Solved Questions)
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The Water Cycle And Water Insecurity Exam Style Questions And AnswersDescribe how deforestation is affecting the Amazon basin - The amount of waterreturning to the atmosphere by evapotranspiration is greatly reduced—from75% to 25% of intercepted water. More precipitation enters the river by runoff.Overland flow increases the amount of soil erosion. Huge quantities of soil areentering the rivers and causing extensive silting. Mudslides are increasing infrequency and scale. The flood risk is raised by the faster runoff. Aquifers arebecoming depleted because less water infiltrates to recharge themName three other ways in which people disrupt the drainage basin cycle - Urbangrowth; constructing dams and reservoirs; abstracting water for irrigationDistinguish between a water budget and a river regime - Water budget is thedifference between precipitation and evapotranspiration, which varies from placeto place and seasonally. River regime is the seasonal variation in the discharge orflow of a river and it too varies, but from drainage basin to drainage basinHow does climate affect water budget? - It affects the amount of precipitationreceived, while temperatures affect rates of evaporation and transpirationIdentify three physical factors affecting a river's regime - Amount and intensity ofprecipitation; geology and soils; vegetation coverHow do you explain the seasonal variations in runoff when rainfall is evenlydistributed throughout the year? - The lower runoff during the summer and earlyautumn is due to the higher temperatures and high water losses due toevapotranspiration. Also the dry ground means that much of the rain infiltratesand percolates below ground
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