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Why does a bubble float up?

Updated: 9/16/2023
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14y ago

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If you are asking about a bubble in a liquid, the answer is that the bubble has lower density (the gas inside is "lighter") than the surrounding liquid.

If you are asking about a soap bubble, the answer is that air currents carry the bubble up. The bubble itself is not lighter than air (unless filled with another gas) but the film making the bubble is so thin and light that air currents can move it easily.

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14y ago
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Q: Why does a bubble float up?
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