By: Aarya Mehta, Alexandra Llaguno, & Melinda Prasad.

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Presentation transcript:

By: Aarya Mehta, Alexandra Llaguno, & Melinda Prasad

Definition: Hydroelectricity is electricity powered by water. - comes from hydropower. - Hydropower = renewable resource - Hydropower is dependent on precipitation and elevation levels. * High precipitation and elevation levels are the most sufficient.

The movement of water as it flows downstream creates kinetic energy that can be converted into electricity. A hydroelectric power plant converts this energy into electricity by forcing water, often held at a dam, through a hydraulic turbine that is connected to a generator. The water exits the turbine and is returned to a stream or river bed below the dam.

Air Emissions Water Resource Use Water Discharges Solid Waste Generation Land Resource Use

 Increases stability and reliability of electricity systems  Contributes to the storage of drinking water  Helps fight climate change  Generates electricity

Advantages of Hydroelectricity 1. Hydroelectricity is an infinite fuel source 2. Efficient source 3. Hydroelectric power plants can be use throughout the world

1. Hydroelectricity dams are costly to build 2. Requires certain weather to continue the operation 3. Hydroelectricity indirectly causes greenhouse emissions

: 33 Major dam failures resulting in 1680 documented fatalities : 9 major dams failed throughout the world 1976: Teton Dam failure in Idaho Obstruction of the river for aquatic life

Largest Dam in the World Three Gorges Dam: China

 Hydroelectricity drastically affects terrestrial and marine organisms by: - the migratory barrier - creating changes in water temperature - diminishing and destroying habitat  Hydroelectricity increases greenhouse emissions.

Relocating terrestrial habitats to higher grounds will prevent it from getting flooded. Use the dam to obtain maximum water for storage only during rainy season. To prevent migratory problems, pick a season where marine life is not drastically affected (when there is no mating season for the majority of animals.) Try filtering the water to prevent decaying remnants from emitting greenhouse gases.

Works Cited Hydroelectric power and water. Basic information about hydroelectricity, USGS Water Science for Schools.. (n.d.). USGS Georgia Water Science Center - Home page. Retrieved April 14, 2013, from Reasons for promoting the hydroelectricity | ITAIPU BINACIONAL. (n.d.). ITAIPU BINACIONAL | A maior geradora de energia limpa e renovável do planeta. Retrieved April 14, 2013, from HydroElectric Power: Risks and Rewards. (n.d.). The Electronic Universe. Retrieved April 14, 2013, from Electricity generated from hydro map. (n.d.). Electricity generated from hydro. Retrieved April 4, 2013, from Renewable Map. (n.d.). Hydro-utility scale generation by state, Retrieved April 4, 2013, from Three Gorges Dam. (n.d.). Largest Dam. Retrieved April 4, 2013, from ActewAGL education site : Energy : Renewable energy : Hydroelectricity : Advantages and disadvantages of hydroelectricity. (n.d.). ActewAGL education site. Retrieved April 4, 2013, from Energy Report - Hydropower. (n.d.).Susan Combs - Texas Comptroller of Public Accounts. Retrieved April 4, 2013, from

Continued… Problems with Hydroelectricity. (n.d.).Problems and Solutions. Retrieved April 4, 2013, from jisibhlphysics.wikispaces.com/Problems+wi Hydroelectric Power. (n.d.). Dam. Retrieved April 4, 2013, from images.wisegeek.com/hydroelectric- power-dam.jpg Nature. (n.d.). Nature. Retrieved April 4, 2013, from content/uploads/2011/04/polar-bears-putin-1.jpgwww.zoenature.org/wp- content/uploads/2011/04/polar-bears-putin-1.jpg Bag of Money. (n.d.). Bag_Money. Retrieved April 4, 2013, from Niagara Falls. (n.d.). Hydroelectricity power. Retrieved April 4, 2013, from madowns.files.wordpress.com/2011/08/niagrafalls.jpg Itaipu dam. (n.d.). Largest_US. Retrieved April 4, 2013, from content/uploads/2013Brazil.jpgwww.industrytap.com/wp-/03/Itaipu- content/uploads/2013Brazil.jpg hydropower. (n.d.). electricity. Retrieved April 4, 2013, from english.m3n4.com/wp- content/uploads/M3N4NEWSNET jpg Hydroelectric Power: How it works, USGS Water-Science School. (n.d.). USGS Georgia Water Science Center - Home page. Retrieved April 4, 2013, from Hydroelectricity | Clean Energy | US EPA. (n.d.). US Environmental Protection Agency. Retrieved April 4, 2013, from AIS Chemistry. (n.d.). Hydroelectric power. Retrieved April 4, 2013, from ais- chemistry.wikispaces.com/Hydroelectric