Supersonic Science for Kids-Throw a Rock into a Pond

 - by KitchenPantryScientist

StephenOrnes at reports that scientists have measured the speed of air escaping the column that is formed when a rock thrown into a flat body of water, like a pond.   When the column collapses, the air that is pushed out moves faster than the speed of sound (760 miles an hour.)  To read more and watch a video, go to

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