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The upthrust exerted by surrounding air on the balloon.

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Q: What force makes a hot air balloon rise up into the air?
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Related questions

How does hot and cold air have an effect on an balloon?

If there is warm air in the balloon, cooler air makes the balloon rise and if there is cold air in the balloon warmer air makes the balloon fall.


What makes an air balloon rise?

it runs on propane.


Why would heating the gas in a hot air balloon make the balloon rise?

When the gas (air) in a hot air balloon is heated it becomes less dense. This makes the balloon more buoyant so it rises.Because heating the air inside the balloon makes it less dense than the air surrounding the outside of the balloon, so it will rise.


What makes a balloon fly up?

The hot air, inside of it is very light and makes the balloon rise up.


What force brings a hot air balloon to earth after the hot air is let out?

Erm.. no.. i believe its Buoyancy... this force causes u the hot air balloon to rise.. not Gravity..


What makes a child's balloon rise?

Helium. The helium gas in the balloon is lighter than the air outside the balloon.


Will a balloon rise if the air inside is hot?

The heating of the air through the use of a burner is what makes balloons rise.


How does thermal expansion make a hot air balloon rise?

It rises because when thermal engery is in the balloon it makes an expansion that makes the balloon fly


How does thermal expansion make a hot-air balloon rise?

It rises because when thermal engery is in the balloon it makes an expansion that makes the balloon fly


Why does heating the air in hot air balloon make it rise?

Hot air is lighter than cold air, so cold air sinks and hot air rises; that makes the hot air balloon rise (if the air around the hot air balloon is heated as well, it won't rise, or sink if in the air).


What makes hot air balloon rise?

Hot air rises. As the air in the hot air balloon is made hotter than the surrounding air it rises.


How does heat make a hot air balloon go up?

Hot air rises. By heating the cool air in the balloon using a propane heater, heats the air and makes the balloon rise