Holes.
Holes.
silence
Hot air, hydrogen or helium are lighter than cold air.
Hot air, hydrogen or helium are lighter than cold air.
Helium is lighter than air and a balloon filled with helium may rise up.
The HIndenberg was filled with highly flamable Hydrogen.Hydrogen is lighter than air so it rises.
No. Helium is lighter than air
It is filled with a gas that is lighter than air.
The HIndenberg was filled with highly flamable Hydrogen.Hydrogen is lighter than air so it rises.
yes, anything with a lower atomic number would be lighter, for example, helium is lighter than air, which is why balloons float when filled with helium... the lighter substance rises above the heavier....
Helium is lighter than air.
Because helium is lighter than air.