The type of gas you put in a hot -air- balloon is either propane, or helium. we used to use hydrogen because it was lighter than air, but, it was very flammable to where even a little spark could light hydrogen and burn a house down.
Hot air is used for hot air balloons.
Just regular air, which is heated. That's why they are called hot air balloons! The fuel gas used for heating the air is usually propane.
A hot air balloon is normally powered with propane. Other than that, it is just ordinary air used inside the balloon.
gas and solid are both filled with hot air balloweens
heliums ligther
Hot air is used for hot air balloons.
Just regular air, which is heated. That's why they are called hot air balloons! The fuel gas used for heating the air is usually propane.
Usually heating is done by passing air over the hot engine so no extra fuel (gas/petrol) is used.
The gas is hot air.
A typical hot air balloon is filled with the same air we breath.
propane
In a "hot air" balloon, which you refer to in your question, the gas is hot air. Heated air rises, so the balloon rises. The gas used in the burner, to heat the air, is propane.
No Gas Just hot air which is why it is called a hot air balloon. If you were wondering hot air is lighter than cold air which makes it rise so when it is trapped inside the balloon the whole thing will rise.
It is lighter than air
hydrogen
hydrogen
hot airships don't really exist. you get hot air balloons, but they're only marginally steerable. If you were to find a hot air ship, well, then lift would be provided by the hot air. The gas they'd use to create that hot air would be propane.