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.
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.
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).
It rises because when thermal engery is in the balloon it makes an expansion that makes the balloon fly
It rises because when thermal engery is in the balloon it makes an expansion that makes the balloon fly
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.
The upthrust exerted by surrounding air on the balloon.
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.
The hot air, inside of it is very light and makes the balloon rise up.
Helium. The helium gas in the balloon is lighter than the air outside the balloon.
The heating of the air through the use of a burner is what makes balloons rise.
It rises because when thermal engery is in the balloon it makes an expansion that makes the balloon fly
It rises because when thermal engery is in the balloon it makes an expansion that makes the balloon fly
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).
Hot air rises. As the air in the hot air balloon is made hotter than the surrounding air it rises.
Hot air rises. By heating the cool air in the balloon using a propane heater, heats the air and makes the balloon rise
Because the fire or heating device heats the air in the top section ( the actual balloon ) and hot air rises... so the hot air trapped in the balloon makes the balloon rise :)