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In which direction does air move: from hot to cold or from cold to hot?
Air moves from hot to cold.
Does hot air move into cold air or does cold air move into hot air?
Both. Since hot air is less dense than cold air, the hot air rises as the cold air falls (i.e. as the cold air displaces the hot air). If you were to dye hot air & then inject it into the center of a room, you would observe the dyed hot air rising. What you may not realize is that gravity draws the (invisible) surrounding dense cold air downwards as it displaces the (visible) less dense dyed hot air. === Previous Posters Answer: Hot air rises
Is hot air denser than cold air?
No, hot air is less dense than cold air.
Does a hot air balloon have helium inside it?
Hot air balloons do not use helium; they are typically filled with hot air. Helium is non-flammable and more commonly used in other types of balloons like weather balloons or party balloons. The hot air inside a hot air balloon is what allows it to rise and float.
When hot and cold air meet the hot air rises to the top Which process causes the hot air to rise?
The hot air rises due to convection, which is the transfer of heat through the movement of liquids or gases. When hot and cold air meet, the hot air expands and becomes less dense, causing it to rise above the denser, cooler air.
Why does a hot air balloon fly when you apply hot air?
the hot air is more dense then the actual air
What is hot air?
hot air is when you get hoott
How does hot air travel out of a hot cup of hot chocolate?
hot air rises
What is hot and cool air?
hot is hot cool air is cold
Hot air makes hotairballoons do what?
Hot air makes a hot air balloon rise because hot air is less dense than the cooler air around it, so the hot air balloon floats on the cooler air around it.
How do hot air balloons stay in air?
hot air rises
Will a balloon rise higher with hot air or cold air?
Hot air
How does a hot air balloon use hot air to rise?
Because hot air rises and cool air sinks. the reason why is because hot air is less dense than cool air so the cooler air will sink
Are laptops meant to blow out hot air or cold air on your fan?
Hot air because it is blow out the hot air from the inside of the laptop.
Where in the atmosphere do hot air balloons float?
Hot air balloons float because hot air displaces cool air in the atmosphere
How do hot-air balloons achieve liftoff?
They achieve liftoff by filling up the envelope with hot air, hot air is less dense and so it rises. To lower the hot air balloon, they will pull a string to release the hot air.
What are the uses of hot air?
ummm.polution? hot air bullons
