Wind energy is praised for being a renewable, nonpolluting source of electricity, but it can also produce intermittent streams of energy, and wind-generating equipment may be costly and troublesome to repair and maintain... More » Science Environmental Science

Electrical energy comes from renewable and nonrenewable sources; it is generally inexpensive and readily available, but it leaves many appliances and heating units defunct when power supplies are interrupted. The benefit... More » Science Physics Electricity

The advantages of wave energy include abundance and renewability, consistency and predictability, pollution free energy, shoreline protection and lack of interference with aquatic life. The disadvantages of wave energy i... More » Science Physics Optics & Waves
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Wind turbines generate energy when their three long blades rotate in the wind, turning a generator to produce electricity. One large turbine generates enough energy for over 500 homes. The largest wind turbines are equal... More » Science Environmental Science Sustainability

Wind energy is a form of electricity that is created by wind turbines. Wind energy is used as a mechanical power that is transformed into electricity, with the use of a generator. More » Science Environmental Science Sustainability

Wind energy is created when moving air causes a wind turbine to rotate, powering a motor that generates electricity. The energy of the wind itself derives from differential heating of the air by the sun and the rotation ... More » Science Earth Science

Wind turbines turn the kinetic energy of the wind into mechanical energy and then electricity through the use of a shaft and a gearbox that power an internal generator. Sensors in the wind turbine allow it to turn and ad... More » Science Physics Electricity