Eli5 What causes the Wub Wub of windows open at high speeds?

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what causes the Wub Wub sound/ vibrations sound when you have some windows open while traveling at high speeds?

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Up end a water bottle (over a sink) the water will “glug glug” out. as the pressure inside drops to a point it sucks air in to balance it before water pushes out again. Same thing with the air in the car the pressure will increase as more air is forced in the window until the pressure is high enough to push air out again. The quick changing pressure will make your ear drums do the glug glug.

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