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Helium is less dense than nitrogen and oxygen, the main components or air. Any given volume of helium has less mass than the same volume of air at the same pressure. Balloons filled with helium therefor rise through air just as air bubbles rise up through denser, heavier water.
A helium filled ballon expands as it rises displacing an increasing volume of air as it goes. This is because the air around it becomes thinner and less dense with altitude. Air pressure at sea level is 1 atmosphere or about fourteen and a half pounds per square inch dropping to zero at the edge of space.
Hydrogen is less dense than helium and therefor has a greater lifting capacity per unit volume than helium. Both were used for airships but helium was much safer because it's not flammable like hydrogen.
The altitude of airships was controlled by venting (releasing) excess gas to stop them rising too far or too fast. They also carried lots of water ballast. It would be dumped as needed to stop the airship from descending too fast. Airships and submarines use similar methods to fix their vertical positions. Whether it's in liquid or gas, it's all about density, pressure, and gravity.
Got to fly ;-)
M.G.S.C.A.Alexander
www.limitbuster.com
Wiki User
∙ 14y ago
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Can you make a balloon fly without hot air or helium?
Yes: Try hydrogen - it worked for the Hindenburg
Which gas is use to fly balloons?
Helium
How do you make a balloon filled with air fly straight?
Put a straw in the end of it and blow into the balloon. That should make it fly straight although make sure you don't use helium and make sure there is as little of wind around as possible. From Matthew
How high do helium balloons fly before they pop?
Depends on the type of rubber and amount of helium in balloon
Can balloons blown up by mouth fly?
No. That requires helium.
What do you put in a balloon to make it fly?
Helium
What those helium do to make things fly?
Helium is lighter than air, hence it will rise up in air, making things fly.
How are balloons and airplanes alike?
They both fly. The only difference is that a ballon has helium to make it fly but air planes use gas to make it fly.
Does helium help the balloon fly?
Yes, helium will help a balloon fly. Helium does not affect the direction that a balloon goes, but it will keep it in the air for quite some time.
How do balloon fly?
Balloons are filled with helium. Helium is a gas that can make light objects float, or make your voice all squeaky. So if you want to pee your pants laughing, go cut a small hole in a balloon and suck the helium out and then speak.
Can you make a balloon fly without hot air or helium?
Yes: Try hydrogen - it worked for the Hindenburg
Which balloon would fly higher the one with helium or the one with air?
The balloon with helium.
What makes a helium balloon fly?
A balloon filled with helium flies because helium weighs less than air.
Which gas is use to fly balloons?
Helium
Why do balloons fly with helium and not with normal human oxygen?
because helium is lighter than air,therefore, when letting go of the balloon it will fly up
How many balloons do you need to make a chihuahua fly?
258 helium filled balloons filled to 34 psi each
How do you make a balloon filled with air fly straight?
Put a straw in the end of it and blow into the balloon. That should make it fly straight although make sure you don't use helium and make sure there is as little of wind around as possible. From Matthew
