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As the external pressure drops with increasing altitude, balloons generally expand with height.
With helium filled balloons, they rise upwards as the gas inside is of a lower density than the atmosphere around them. The balloon will continue to rise and the gas inside it will expand as the atmospheric pressure decreases with increasing altitude. Eventually, the gas inside the balloon will expand enough to burst the balloon and the balloon will fall back to the ground. When and where this happens depends on weather conditions, air temperature, the rubber used in the balloon, etc.
A combination of heat from the sun and the lower pressure of the surrounding air the higher you go, causes the gas in the balloon to expand. Along with the sunlight weakening the balloon material, it will burst.
stratosphere
They go to a mother city and don't come back
All balloons expand in heat.
YES
I think it is helium, I could be wrong.
Excites the air particles inside causing it to expand
The hot water heats the air inside the balloon - making it expand.
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They fly into the stratosphere. Weather balloons can reach altitudes of 40 kilometers (about 25 miles).
Answer Heaven is meant only for Human and animals...but not balloons
heat from the sun causes the gas inside the balloon to expand.
Expand your tree up and out to reach the hot air balloon to get bonuses.
As the external pressure drops with increasing altitude, balloons generally expand with height.
The air molecules expand as it gets higher and higher into the atmosphere. the molecules expand.