Hot air balloons are a slower form of transportation. For most people, they are beautiful to see when they are in the air.
Hot air is used for hot air balloons.
hot air balloons
Buoyancy allows hot air balloons to fly.
Balloons can be filled with air (don't float), or with hydrogen or helium (float because the gas is less dense). Hot air balloons use burners to heat the air so that it becomes slightly less dense than the cooler air around it, providing some lift.
Fire and, well, hot air.
Smoking in a hot air balloon
Hot air is used for hot air balloons.
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Hot air balloons float because hot air displaces cool air in the atmosphere
air balloons or hot air balloons fly because they fill with a very light type of air. The air is hot air.
hot air balloons
balloons and some times hot air balloons dozens of industrial and scientific uses.
Hot Air Balloons work because of the hot air.The hot air rising stays in the balloon and carries it upward.
This may not help, but I didn't think it had ANYTHING to do with hot-air balloons...
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Buoyancy allows hot air balloons to fly.
People think that hot air balloons where made for battles.