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Hydropower

Hydropower. Michelle Jamshidi , Olivia Sahadeo , and Milan Wolfe October 18, 2011 Mrs. Valentine AP Environmental Science. Electrical energy produced by falling or flowing water. Indirect form of solar energy, based on evaporation of water

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Hydropower

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  1. Hydropower Michelle Jamshidi, Olivia Sahadeo, and Milan Wolfe October 18, 2011 Mrs. Valentine AP Environmental Science

  2. Electrical energy produced by falling or flowing water. • Indirect form of solar energy, based on evaporation of water • Deposited at higher elevations where it can flow to lower elevations in rivers as part of the Earth’s solar powered water cycle. What is Hydropower? http://nepalnepal.com/community/blogs/entry/Nepal-s-River-may-Runs-Dry-for-Hydropower.com

  3. Water flows from higher to lower elevations in rivers and streams controlled by dams and reservoirs. • Water stored in reservoirs flows through large pipes at controlled rates, spinning turbines and producing electricity. http://zpeec.af/mhp_contents.html.com How Hydropower Works

  4. Hydroelectric plant • Falling (Moving) water • Kinetic energy • Turbine • Generator • Reservoir • The falling water contains kinetic energy which goes through • The hydroelectric plant takes this energy, which spins the turbine. • The turbine converts the water into electricity. • This electricity is carried to the electrical grid through transmission lines. Materials

  5. http://www.bettertrades.org/sectornomics/energy/hydro.asp.comhttp://www.bettertrades.org/sectornomics/energy/hydro.asp.com

  6. World’s leading renewable energy source to produce electricity. • Third cheapest way when environmental costs are included • High efficiency: 80% • Moderate to high net energy • No CO2 emissions during operation in temperature areas. • Provides flood control below dam • Provides irrigation water http://www.visitingdc.com/las-vegas/hoover-dam-directions.asp.com Advantages

  7. Concern for Methane, a potential greenhouse gas form submerged vegetation that is decomposing. • Global warming increases prolonged drought which reduces water flow in rivers and streams. • High construction costs • Environmental costs not included • CO2 emissions from rapid biomass decay in shallow tropical reservoirs • Danger of collapse • There is a decrease of fish harvest http://www.mariposacounty.org/index.aspx?NID=286.com Disadvantages

  8. Tides and Waves • Dams built across the mouths of some bays and estuaries to capture the energy in these flows for hydropower. In-Stream Use of Water • River and streams: The water from rivers and streams is used to create electrical energy. http:// www.hickerphoto.com/articles/fine-art-photo-print/tidal-waves-9677.htm.com Purposes

  9. Friedland, Andrew, and Relyea Rick. Environmental Science for AP. New York, New York: W.H. Freeman and Company/BFW, 2012. • How Hydropower Works. Wisconsin Valley Improvement Company. Web. 17 Oct. 2011. <http://www.wvic.com/hydro-works.htm>. Works Cited

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