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You are here: Home / Science / Why does a helium balloon float when a regular one falls down?

Why does a helium balloon float when a regular one falls down?

March 28, 2020 by Karen Hill

Anything that’s lighter than air will float.

A liter of air at sea level weighs about 1.25 grams; a liter of helium, though, is only .18 grams.

Therefore the air sinks below the helium balloon, causing it to fly upward.

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Filed Under: Science

About Karen Hill

Karen Hill is a freelance writer, editor, and columnist. Born in New York, her work has appeared in the Examiner, Yahoo News, Buzzfeed, among others.

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