Helium molecules are lighter than most air molecules in the atmosphere (mostly nitrogen and oxygen) therefore they are prone to rise while heavier molecules move downward.
Helium rises because it's lighter than oxygen...
because helium filled balloon contain heat
The density of helium is lower than the density of air.
Helium is light and it will float / rise.
no
Helium is lighter than air. So it will float in air.
Because helium is lighter than air. So helium balloon will rise up.
helium is less dense than air. :) so helium will float better than air
Helium is light and it will float / rise.
Helium is lighter than air. Hence balloons or blimps filled with helium will float.
Helium is lighter than air. so balloons filled with helium will float in air
No, human body doesn't float on helium as it is light.
Helium
Helium is lighter than air. so balloons filled with helium will float in air. warming will make them float or rise up faster.
When balloons float they have helium in it. Helium is not air, but a gas. It's lighter than air, which makes it float.
yes
no
they don't float ONLY with helium. They float with any gas that is less dense than air, for instance hydrogen.
Helium is lighter than air. So it will float in air.
Because helium is lighter than air. So helium balloon will rise up.