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Hydroelectric energy is generated by taking advantage of the difference in height of water behind and in front of a dam. This water has potential energy.

The water is fed down huge pipes and into large turbines where the water spins the wheels of the turbines which in turn are attached to large electrical generators.

The original potential energy of the water has thus been transformed into electrical energy, plus some heat and noise energy. Sun and rain will put the water back to allow the whole process to be repeated indefinitely.


Wind turbines, just like windmills, harness the energy of the wind to do something useful. Early windmills were used to grind grain and pump water and many still do today. Modern wind turbines are used to generate renewable energy in the form of electricity.

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What are all the similarities between wind power and hydroelectric power?

Both wind power and hydroelectric power are renewable energy sources that generate electricity without emitting greenhouse gases. They both rely on natural forces - wind and water - to produce electricity. Additionally, both technologies have the potential to provide a consistent and reliable source of power.


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