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Hydroelectric Energy

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The force of the water being released from the reservoir through the dam spins ... mighty Tennessee River takes a sharp hairpin turn northward to avoid this big ... – PowerPoint PPT presentation

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Title: Hydroelectric Energy


1
Hydroelectric Energy

2
How it Works
  • The water is held behind a dam, forming an
    artificial lake, or reservoir. The force of the
    water being released from the reservoir through
    the dam spins the blades of a giant turbine. The
    turbine is connected to the generator that makes
    electricity as it spins. After passing through
    the turbine, the water flows back into the river
    on the other side of the dam.
  • Hydroelectric power, or hydroelectricity, is
    generated by the force of falling water.

3
How it Works
4
Ice Harbor Dam
  • On May 9, 1962, Vice President Lyndon Johnson
    (1908-1973) dedicates Ice Harbor Dam on the Snake
    River. Planning and construction took 15 years
    due to lack of funding and to concerns about
    potential harm to migrating fish. Proponents of
    the dam countered environmental concerns with
    arguments that the electricity generated would
    support the Hanford nuclear weapons facility, and
    that the retained water would irrigate crops.

Ice Harbor Dam
5
Raccoon Mountain pumped storage plant
  • Steep Raccoon Mountain, located along the eastern
    fringe of the rocky Cumberland Plateau, has
    always been a remote place, sparsely settled and
    hard to get to even though its only six miles
    west of Chattanooga, Tennessee, as the crow
    flies. Downstream from the city, even the mighty
    Tennessee River takes a sharp hairpin turn
    northward to avoid this big bulk of limestone and
    pine.
  • Unchanging as the mountain looks, its not the
    same as it was 30 years ago. On top of it is
    something that didnt exist when Cherokee hunters
    stalked bear and wildcat there in times past a
    man-made lake holding about 60 million cubic
    yards of water.

.
Raccoon Mountain
Raccoon Mountain is a pumped storage plant and
not a dam.
6
Advantages of using Hydroelectric Energy
  • Abundant, clean, and safe
  • Easily stored in reservoirs
  • Offers recreational benefits like boating,
    fishing, etc 

7
Disadvantages of using Hydroelectric Energy
  • Can have a significant environmental impact
  • People can lose their homes
  • Can be used only where there is a water supply¬†

8
HYDROELECTRIC ENERGY!

Choose Hydroelectric Energy!
Offers recreational Benefits like boating And
fishing
Its Abundant ,Clean, And Safe!
9
Sources (URL)
  • http//www.sei.ie/Schools/Secondary_Schools/Subjec
    ts/Geography_JC/Pros_Cons1/
  • http//www.eia.doe.gov/cneaf/solar.renewables/page
    /hydroelec/hydroelec.html
  • http//www.sei.ie/Schools/Secondary_Schools/Subjec
    ts/Geography_JC/Pros_Cons1/
  • http//www.historylink.org/index.cfm?DisplayPageo
    utput.cfmFile_Id7607
  • http//www.tvakids.com/electricity/hydro.htm
  • http//www.tva.gov/power/hydroart.htm
  • http//www.tva.gov/heritage/mountaintop/index.htm
  • http//www.personal.psu.edu/users/e/l/elr5005/hydr
    oelectricstinks_files/image001.jpg
  • http//upload.wikimedia.org/wikipedia/commons/d/de
    /Stwlan.dam.jpg
  • http//www.crem-ltd.com/images/clyde_hydro_800px.j
    pg
  • http//www.mercycorps.org/photos/photo1213038673.j
    pg

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