Warm air is lighter than cold air because cold air is denser, by dense I mean the particles in cold air are more packed together than it is in warm air. Therefore cold air is heavier which is why warm/hot air always floats above cold air (same thing with hot/warm and cold water). That is why warm/hot air is lighter than cold air.
That's the reason why a hot air balloon only goes up when there's something producing hot air (like fire for example), and the only reason it goes back down is if you put out the fire. Remember this only happens because Hot water/air is less dense than cold air which makes it lighter.
Warm air masses are lighter than cold air masses because the molecules of cold air move slower than the warm air's molecules.
no
Warm air is less dense (lighter) than cold air..that is why warm air rises and cold air settles
Warm air is lighter than cold air, that means that warm air will rise and the cold air will sink.
cold fronts are heavier than warm fronts
Warm air is lighter and therefore rises. Cold air holds more water and is heavier. Cold air sinks lower than warm air.
No, warm air is lighter than cold air because hot air rises and cold air stays in the same place.
Warm air is lighter than cold air. So you'll always get warm air on top of cold air when they meet.
This due to Warm air being lighter than cold air. Warm air rises. This causes a suction and colder air comes in from the sides..
Yes, cold air does have a higher density than warm air. For example, if you turn on the fireplace, all of the warm air rises to the ceiling. On the floor, the air is cooler.
Warm air is lighter then cold air. So the cold air sinks and the warm air raise.
hot air is lighter than cold air so, it gose up