It isn't. Hot air Ballons use Hot Air. Hot air being lighter and therefore less dense than normal air allow the balloon to float.
because it is better than hydrogen. hydrogen is extremely flammeable.. (eg, the Hindenburg disaster...)
Helium is less dense (lighter) than air, so it floats, or rather, it will make an airship rise into the air.
Helium is less dense (lighter) than air, so it floats, or rather, it will make an airship rise into the air.
Hydrogen and helium are used in airships because there are less dense than air. That means that if we fill a big, lighweight bag with hydrogen or helium, the bag will be lighter than air and will provide lift. It will float off the ground. Hydrogen is cheaper to come by, but it is so terribly flammable that it is too dangerous to be used in airships any more. The Hindenburg was filled hydrogen, and it's destruction was one of the most spectacular and tragic events of the 20the century. The modern airships like the famous Goodyear blimp are filled with helium.
It's cheap and light enough to produce a decent amount of lift.
Because helium is an non flammable gas, which proved a much safer alternative to the hydrogen airship following the explosion of the LZ129 Hindenburg on May 6th 1937.
It is very light, which makes it very bouyant. It is used over hydrogen, which is even less dense, because hydrogen is very flammable, while helium is inert.
because helium is less flame able
because it is light and precise ugly
Balloons are filled with gas (such as helium), or a mixture of gasses (such as air) or hot gasses (such as hot air).Helium.
It can be, but usually not. Helium is a bit expensive, and it'd cost too much for most balloonists to use it. It's cheaper to use a hot air balloon. helium is lighter than air. hence balloons filled will helium will float in air.
I am fairly sure that hot air balloons use normal air. They rely more on the idea of bouyancy rather than using specal gases, such as helium. The hot air inside of the balloon is more bouyant than the cold air outside of the balloon. So that makes the balloon ascend till the temperature of the air inside of the balloon is equal to the temperature of the air outside of the balloon. Then as the air inside the balloon gets colder, the balloon starts to descend.
The gas is helium or hot air.
Filling a balloon with enough helium for flight takes a lot of helium, hot air balloons only use hot air because it only takes a couple of tanks of propane to heat the air, which is much more cost effective than filling the balloon with helium. Airships use helium because they are used to stay in the air for extended periods of time, so it makes sense to pay for the helium to fill it once, rather than the propane to keep the air hot.
A hot air balloon doesn't contain helium.
No, I am sorry, but there is no helium inside a hot-air balloon. Instead, there is hot air.
A hot air balloon doesn't contain helium or hydrogen.
No, hot air balloons, as the name suggests, contain hot air, not helium.
yes, but when using Helium you must have the balloon completely sealed and used a mylar material for the balloon as Helium 'leaks-out' of ordinary materials.
no its filled with hot air from a fire that is lit underneath the balloon.
A helium balloon does not need energy to rise in the air. A hot air balloon needs fuel to rise in air. That is it needs heat energy to rise in air.i love Pizza squares i hope they put helium in then one dayHelium relies on the fact that helium is lighter than air. Hot air balloons rely on the fact that hot air has less volume than cold air and is lighter than the air around it. hot air balloons use hot air to cause the balloon to lift as helium balloons use a special gas to cause lift
Some use hot air (like a hot air balloon) and others use helium.
helium
A helium balloon does not need energy to rise in the air. A hot air balloon needs fuel to rise in air. That is it needs heat energy to rise in air.i love Pizza squares i hope they put helium in then one dayHelium relies on the fact that helium is lighter than air. Hot air balloons rely on the fact that hot air has less volume than cold air and is lighter than the air around it. hot air balloons use hot air to cause the balloon to lift as helium balloons use a special gas to cause lift
helium balloons get filled with a amount of air in which is called helium it is used to make balloons float around in air. helium is a inert,gaseous element!!!!!yea i kenisha am smartHelium is less dense than air, therefore a helium-filled balloon will float in air.Helium is lighter that air, so it effectively floats on air. As a helium balloon is submerged in air, it rises upwards (like an air filled bubble in water).
They are not! The air inside them is trapped in the balloon and heated, expands, becomes less dense and rises therefore pulling the balloon up with it. If helium was used it would explode! :)