The generators (big, aren't they?) in this picture are the key
to getting electricity from falling water
(hydrolectric power).
These are very large electric motors containing
magnets and wires, quite similar to any small motor, such as
in an electric train set. Beneath these generators a metal shaft
connected to a propeller is being turned by falling water.
As the propeller is turned by the water, the shaft turns, which then turns the components of the generator to produce electric power. Most electric power is produced in a similar way -- generators don't really care what is used to turn the shaft. Coal-fired power plants burn coal to heat water to produce steam, which turns the shaft; nuclear power plants use nuclear fuel to heat the water into steam.
Measuring water
Human's influence
Water use
Water Science home page
U.S. Department of the Interior | U.S. Geological Survey
URL: http://ga.water.usgs.gov/edu/hyturbine.html
Page Contact Information: Howard Perlman
Page Last Modified: Friday, 07-Nov-2008 15:43:57 EST
