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When air gets hotter, or when any gas gets hotter, it expands. This means its density will decrease; therefore, cooler (and heavier) air will push it up.

When air gets hotter, or when any gas gets hotter, it expands. This means its density will decrease; therefore, cooler (and heavier) air will push it up.

When air gets hotter, or when any gas gets hotter, it expands. This means its density will decrease; therefore, cooler (and heavier) air will push it up.

When air gets hotter, or when any gas gets hotter, it expands. This means its density will decrease; therefore, cooler (and heavier) air will push it up.

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โˆ™ 2009-12-09 02:14:50
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โˆ™ 2009-12-09 02:14:50

When air gets hotter, or when any gas gets hotter, it expands. This means its density will decrease; therefore, cooler (and heavier) air will push it up.

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Q: Why does air rise when it is hot?
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Related questions

Does heat rise or hot air rise?

Heat is the energy of the hot air. Therefore hot air rises


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.


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).


Why do hot air balloons rise with hot air?

Hot air is less dense than cooler air, therefore the balloon will rise (float) on the cooler air around it.


Why do you think hot-air balloons can rise into the air?

Hot-air balloons can rise up into the air because hot air is lighter, allowing it to float up into the sky.


Does hot air rise or fall?

Hot air rises


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

Hot air


What happens to cold air does it rise like hot air?

Cold air does not rise like hot air. Cold air sinks. Hope this helps


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.


How is a hot balloon lifted into the air?

to make a hot air balloon rise you use hot air


Why are hot air balloons able to rise into the air?

The hot air from the burner rises since it has little density, and then is caught in the balloon, which causes it to rise.


Does hot and cold air fall or rise?

Hot air rises and cold air falls.


When hot and cold air meet the hot air rises to the top. Which process causes the hot air to rise?

Convection


Why does a balloon need hot air?

Hot air is less dense compared to cold air. The heated air in the balloon will rise, making the balloon float in the air.to make it rise.


Which process causes the hot air to rise?

convection


What does hot air rise due to?

i


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.


How does hot air rise?

Hot air rises because it is less dense than cold 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.


When hot and cold air meet the hot air rises to the top Which process causes the hot air to rise?

convection (studyisland answer)


Why does hot air rise up above cold air?

Because hot air is lighter than cold air.


Why do hot air masses rise over cold air masses?

Hot air has less mass which make it less dense, thus allowing it to rise over a cold air mass.


Is a hot air balloon lighter or heaver then air?

The actual balloon isn't lighter than air, the only reason hot air balloons rise is because they are filled with hot air, which is lighter and less dense than cold air, causing it to rise. :)


What 2 things that use hot air to rise?

hot-air balloons and birds in flight.


What is the use of air in air balloon?

with out the hot air the balloon would not rise