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Wind !... The balloons are filled with hot air, which causes them to rise. They are then at the mercy f the wind direction.

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Q: What source is used to fly hot air balloons?
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Related questions

Why was hydrogen used for air balloons?

because it helps it fly in air


Why lighter than air balloons fly?

air balloons or hot air balloons fly because they fill with a very light type of air. The air is hot air.


Which gas is use to fly balloons?

Helium gas is commonly used to fly balloons due to its lighter-than-air properties. It is non-flammable and safe for use in balloons to provide the lift needed for them to float in the air.


What do aviators fly in?

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i dont know its used as hot and cold put together and fly


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Can balloons fly to space?

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What did Montgolfier first fly?

Hot air balloons


Which force allows hot air balloons to fly?

Hot air balloons fly due to the principle of buoyancy. As the air inside the balloon heats up, it becomes less dense than the surrounding cooler air. This difference in density creates a lifting force that allows the balloon to float in the air.


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