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Large windmills consist of a base, often a building constructed of wood or stone, with a series of blades or sails (the flat or semi-flat pieces), and a gear-box that allow the blades to turn. School projects of small windmills can be made of a can for a base, a thin wooden stick, plastic for the sails, wires.

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As wind hits the blades or sails, they begin to turn (aided by the gear box). This turning energy can be harnessed to create power. As a power-producer, windmills reduce reliance on fossil fuels like coal and thereby create cleaner energy sources.

The Dutch have used windmills for centuries. The USA has far fewer windmills, although more individuals have become interested in "wind power", especially over the last 30 years.

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15y ago

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