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A water wheel is a large wheel with paddles or buckets around its edge. It turns when moving water pushes against these parts. Water wheels are usually built next to flowing water.
The turning wheel can power machines, such as millstones that grind grain into flour, or pumps that move water. Water wheels were used thousands of years ago, long before modern engines and electric motors. Some wheels turn when water flows over the top, while others turn when water hits the bottom.
The turning wheel can power machines, such as millstones that grind grain into flour, or pumps that move water. Water wheels were used thousands of years ago, long before modern engines and electric motors. Some wheels turn when water flows over the top, while others turn when water hits the bottom.