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Usually only balloons that are filled with helium will float. Helium is a gas that is lighter than air, so causes the balloon to fly. Note that if you blow a balloon yourself, it will just float to the ground. There are also hot air balloons in which the air is heated by an on board heater. Hot air, being lighter than cold air, rises and lifts the balloon. When the air cools, unless it is reheated, the balloon descends.
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∙ 15y ago
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∙ 12y agoSince cold air is more dense that hot air, hot air rises. The hot air rises to push the balloon up.
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∙ 14y agoThe hot air (helium) is thin lighter making the balloon rise!
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∙ 12y agoBecause hot-air balloons have helium in them and helium makes things float because it's lighter than air.
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∙ 11y agobecause of of the hot air it is pushing the balloon in the air if it was cold the balloon would srink so the hot air makes it xspand
ty for asking
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∙ 11y agothe fire is the main object to allow the hot air ballon rise up .
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Which force allows hot air balloons to fly?
Buoyancy allows hot air balloons to fly.
Which gas do you use for hot air balloons?
Hot air is used for hot air balloons.
Why are hot air balloons able to rise into the air?
The hot air from the burner rises since it has little density, and then is caught in the balloon, which causes it to rise.
What last longer helium fill balloon or hot air balloons?
hot air balloons
How are hot air balloons blimps and dirigibles similar?
um dont ask me omg man
What source is used to fly hot air balloons?
Wind !... The balloons are filled with hot air, which causes them to rise. They are then at the mercy f the wind direction.
Which force allows hot air balloons to fly?
Buoyancy allows hot air balloons to fly.
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.
How do hot air balloons use air to fly?
Hot air balloons use the fact that hot air rises as a way to make balloons fly. When the air inside the balloon is heated, it rises, and this creates lift which is used to make the balloon fly.
Why does hot balloons fly?
The hot air inside the balloon expands, making the hot air balloon fly.
How do hot-air balloons fly?
Hot air balloons can fly because hot air rises. When the air inside the balloon gets hot, it rises above the cooler air around it, and it lifts the balloon and any cargo and passengers with it.
What did Montgolfier first fly?
Hot air balloons
What can you make fly?
You can't physicly fly, but you can ride in air planes and hot air balloons.
Where do hot air balloon fly form?
Hot air balloons can pick up and fly from just about anywhere. As long as the surface is flat a hot air balloon can fly from it.
Does a hot air balloon float or fly?
a hot air balloons floats. something to do with buoyancy
What layer of the atmosphere does hot air balloons fly?
Troposphere
Do hot air balloons fly or glide?
neither..... they float with the wind! :-)
