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The helium weighs less than air- so when the balloon is filled, it displaces the heavier air, and floats. Just as a bit of wood weighs less than water, and floats on water. In a vacuum, a helium filled balloon would not float (but it may pop)

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14y ago
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5mo ago

Balloons filled with helium float because helium is lighter than air. When helium is trapped inside the balloon, it displaces the air and creates lift, causing the balloon to rise.

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Q: Why do balloons float when you put helium in them?
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Related questions

What element is put in balloons so they float?

Helium is the element commonly used to fill balloons to make them float. It is lighter than air and creates lift within the balloon, causing it to rise.


What are balloons that float filled with?

Helium


Which gas is in balloons which float?

Helium


Will warming helium balloons make them float?

Helium is lighter than air. so balloons filled with helium will float in air. warming will make them float or rise up faster.


What gas are balloons filled with to make them float?

Balloons are usually filled with helium gas to make them float. Helium is lighter than air and provides the necessary lift for the balloon to float.


Why do helium balloons float better than just air balloons?

helium is less dense than air. :) so helium will float better than air


What does helium have in it that makes it float?

Helium is lighter than air. Hence balloons or blimps filled with helium will float.


What gas do you use in balloons?

Helium to get them to float.


Which gas is used to fill party balloons?

Helium gas is commonly used to fill party balloons as it is lighter than air, which causes the balloons to rise and float.


What element is used inside balloons so they float?

Helium gas is most commonly used to fill balloons to make them float. Helium is lighter than air, which causes the balloon to rise and float.


Why does a helium balloom float in air?

Helium is lighter than air. so balloons filled with helium will float in air


Why do balloons only float with helium?

Balloons filled with helium float because helium is lighter than the surrounding air, creating a lifting force. This is known as buoyancy. Regular air-filled balloons are denser than the surrounding air and do not float.