Hydroelectric plants generate electricity from moving water.
Production of Hydroelectricity
- A dam is constructed that holds back water.
- Gates are opened in the dam. This allows water to be pulled through a pipeline that leads to a turbine. A turbine is a machine with a revolving wheel that is turned by water.
- The rotation of the turbine causes magnets inside a generator to rotate past copper coils. A generator is a machine that converts one form of energy into another. As the magnets rotate past the copper coils, AC current is produced by moving electrons in the copper coils.
- The transformer converts AC current into higher-voltage current. A transformer is a device that reduces or increases AC current voltage.
- The higher-voltage current is carried from the power plant on power lines.
- Used water is carried downstream in pipelines.
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