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Hot air is less dense than cooler air. This makes it weigh less then the surrounding air so it rises.

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13y ago

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What is the use of air in air balloon?

with out the hot air the balloon would not rise


Why would heating the gas in balloon make the balloon rise?

if you mean how the hot air in a hot air balloon makes it rise, its because hot air is less dense than cold air. when cold and hot air meet the cold air sinks thus making hot air left to rise.so when you put hot air in a balloon the air would rise. hope this helps.


Will a balloon rise higher with hot air or cold air?

Hot air


Why does a balloon need hot air?

A balloon needs hot air to make it rise because hot air is less dense than cold air. When the air inside the balloon is heated, it becomes lighter and causes the balloon to lift off the ground and float in the air.


Why is an hot air balloon called a hot air balloon?

A hot air balloon is called such because it is filled with hot air to make it rise. When the air inside the balloon is heated, it becomes less dense than the surrounding cooler air, causing the balloon to float upwards.


When does a air balloon rise?

A hot air balloon rises because when hot air is added it is intended to rise and when the hot air balloons wants to land, hot air is decreased.


What kind gas is used in hot air balloon?

No Gas Just hot air which is why it is called a hot air balloon. If you were wondering hot air is lighter than cold air which makes it rise so when it is trapped inside the balloon the whole thing will rise.


A hot air balloon rise becausr the hot air inside the balloon is?

The air is less dense than the air outside.


Why do hot air balloons rise with hot air?

Hot air is lighter than cool air, so when the balloon is filled with hot air, it becomes less dense than the surrounding cool air, causing it to rise. As the hot air inside the balloon cools, the balloon will descend. By controlling the temperature of the air inside the balloon, the pilot can control the altitude.


Why did they call it the hot air balloon?

A hot air balloon is called an hot air balloon because, the inside is heated up to make it less dense, allowing it to rise. Meaning, your heating up the air inside the balloon, hence, the name: Hot air balloon.


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

if you mean how the hot air in a hot air balloon makes it rise, its because hot air is less dense than cold air. when cold and hot air meet the cold air sinks thus making hot air left to rise.so when you put hot air in a balloon the air would rise. hope this helps.


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).