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A renewable resource is a way of generating energy using something that will
never runout, like wind, the sun or heat deep from within the earth.
Learn more about this exciting green energy topic:  | - Coal, oil, and natural gas are nonrenewable energy sources because they will run out. They were formed millions of years ago from the remains of sea plants and animals, and we cannot make them in a short time.
| |  | - Day after day, the sun shines, the wind blows, and the rivers flow. We use renewable energy sources mainly to make electricity.
- Renewable energy sources will never run out.
- Examples of renewable energy sources include biomass, geothermal, wave, solar, wind, and water.
| |  | - There is tremendous energy in the ocean waves. It's estimated that the total potential off the coast of the United States is 252 billion kilowatt hours a year.
- Tidal turbines are basically wind turbines in the water that can be located anywhere there is strong tidal flow. The entire west coast of California touches the Pacific Ocean- where waves never stop!
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 | - The entire world resource base of geothermal energy has been calculated in government surveys to be larger than the resource bases of coal, oil, gas and uranium combined.
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| - One wind turbine can produce enough electricity to power up to 300 homes.
| |  | - Using renewable energy sources usually results in almost no pollution.
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