why does a helium balloon float in air ?
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Balloons float because they are filled with helium! Balloons can be filled with different types of gas. The air we breathe is made up of lots of different gasses. ... The helium wants to float up, up, and away from the surface of the Earth — so your helium-filled balloon wants to float up, up and away too!
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Balloons float because they are filled with helium! Balloons can be filled with different types of gas. The air we breathe is made up of lots of different gasses. ... The helium wants to float up, up, and away from the surface of the Earth — so your helium-filled balloon wants to float up, up and away too!
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