chapter 17 questions for review
1.) Withdrawal is the total amount of water taken from a lake, river, or aquifer for any purpose. Consumption is the fraction of withdrawn water that is lost in transmission, evaporation, absorption, chemical transformation, or otherwise made unavailable for as a result of human use. Degrading is polluting or heating so that it is unsuitable for other uses.
2.) Withdrawal of water in each section increases as time increases. Agriculture does this on a much larger level than domestic and industry but they are all in proportion. Trends show that withdrawal levels never meet consumption, they are always way higher.
3.) Places with the highest water irrigation are those lining the Mississippi River, and the Midwest.
4.) Some problems with damming and water diversion techniques are that they flood areas above the dam, drowning communities and graveyards. Other problems with dams are that they restrict the migratory patterns of indigenous fish who mate upstream.
5.) Water molecules would move by transpiration, it would evaporate and turn into a gaseous form. When it becomes humid enough and there is enough pressure and water molecules in the air condensation will occur. The water molecules would then runoff into bodies of water that increased in size until it reached the ocean again.
6.) Starting at the largest river; the Amazon in Brazil and Peru; the Orinoco in Venezuela and Columbia; the Congo in the Congo; Yangtze in Tibet, China; and the Bramaputra in Tibet, India and Bangladesh.
7.) Mountains block some rainfall from reaching other places. They cause a rain shadow which creates a dry leeward side of the mountain. This doesn’t really affect my area, there aren’t many mountains.
8.) Three consequences of over-pumping aquifers are subsiding ground levels, sinkholes and saltwater intrusion as well as depletion of water supplies.
9.) 97 percent of water is salt water, 3 percent is freshwater.
10.)An aquifer is a porous layer of gravel, stone or sand that is below the water table. Water enters these aquifers by a seeping process and it stays there.
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June 20th, 2007 at 6:22 am
Green…
OMG! I cant beleive it….