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They have to let out the hot air a little at a time.
Wiki User
∙ 16y ago
Wiki User
∙ 12y agoIn a movie I saw, this guy releases air from the balloon by pulling on a string. That is how a hot air balloon descends.
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What form is helium?
hot air balloons and balloons
Why do hot air balloons have sand bags?
Modern hot air balloons do not have sand bags because the air input is easily controlled for lift. Hot air balloons used to have sandbags to weigh them down until lift off and sand was gradually dumped to gain height in the air.
What kinds of balloons are there?
hot air balloons, colorful ones what kind of simple quesion is this!
What chemicals do balloons contain?
helium or oxygen depending on what you put in them
What is the element used to blow up balloons?
Gases used are: air (and hot air), helium.
What does a hot air balloon use to make the balloon go down?
Hot air balloons go down by releasing the hot air in the balloon. Normally you just let the air inside cool and descend slowly. You release hot air only if you wish to descend more quickly.
How can the height be controlled for hot air balloons to land?
There is a valve to release hot air from the top. The amount of hot air you let out from the top is replaced with cooler air from the bottom, causing the balloon to descend.
How do they make hot air balloons descend?
I think you slowly decrease the amount of hot air you're using to lift the balloon. If I'm wrong, I hope someone will correct me.
Which gas do you use for hot air balloons?
Hot air is used for hot air balloons.
Where in the atmosphere do hot air balloons float?
Hot air balloons float because hot air displaces cool air in the atmosphere
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.
What last longer helium fill balloon or hot air balloons?
hot air balloons
Why do hot air balloons work?
Hot Air Balloons work because of the hot air.The hot air rising stays in the balloon and carries it upward.
What does thrust have to do with hot air balloons?
This may not help, but I didn't think it had ANYTHING to do with hot-air balloons...
when do hot air balloons come to bucyrus ohio?
when do hot air balloons cometo bucyrus ohio
Which force allows hot air balloons to fly?
Buoyancy allows hot air balloons to fly.
Why were hot air balloons made in 1783?
People think that hot air balloons where made for battles.
