0
Warm air rises because it is less dense than cold air.
Kinetic molecular theory tells us that warmer particles move faster than colder particles. (That's how we define a substance to have "heat".) You can imagine that faster particles are going to bump into each other more often, pushing other particles away.
So, yes. Warmer = less dense = rising. In all things.
Waldo Mayer
Wiki User
∙ 13y agoNo, almost always it is less dense. Most objects expand when heated, this makes them less dense (same mass, divided by a larger volume).
Wiki User
∙ 13y agoCold air is more dense than warm air. Warm air rises and cool air pushes down.
Wiki User
∙ 12y agoLess dense; the heat spreads the atoms out.
Wiki User
∙ 12y agoLower density. The object expands when it is heated, increasing the volume, but leaving the mass the same.
Add your answer:
Earn +20 pts
What is less dense warm air or cold air?
Warm air is less dense (lighter) than cold air..that is why warm air rises and cold air settles
Cold air is than warm air?
Cold air is more dense and less buoyant than warm air.
Why is warm air pushed upwards by cooler air during convection?
Warm air is less dense, as the atoms are moving fast, creating the heat and spacing the atoms out farther apart. The atoms rise above the denser, slower moving atoms; therefore, hot air rises. (the hot air can't push below the cooler air, which is less dense. its like tennis balls bouncing on a wall)
Is Warm air is less dense than cold air?
No it's just less dense. For the same volume of air, warm air is lighter.
When dense cold air meets less dense warmer air the warm air is pushed?
The heavier cold air sinks and slides under the warm air and forces it upward. This causes cumulus and cumulonimbus clouds to form. This brings in the rainstorms and thunderstorms.
What is less dense warm air or cold air?
Warm air is less dense (lighter) than cold air..that is why warm air rises and cold air settles
When dense cold air meets less dense warm air the air is pushed?
When dense,cold air meets less dense,warmer air, the warm air is pushed up
Cold air is than warm air?
Cold air is more dense and less buoyant than warm air.
When dense cold air meets less dense warmer air the warm is pushed?
When dense,cold air meets less dense,warmer air, the warm air is pushed up
What is true A warm air is less dense than cool air B warm air is as dense as cool air. C warm air has no density. D warm air is denser than cool air?
Warm air is less dense than cool air.
Is warm air less dense than cold air and moist air is more dense than dry air?
Warm air is less dense then cold air. But moist air is actually less dense than dry air because water vapor has a lower molecular weight than the oxygen and nitrogen that make up most of the atmosphere.
What makes less dense air come from the equator?
Air becomes more or less dense relative to its temperature. Cold air is denser than warm. Since the equatorial region is tropical, the air will be warmer and less dense.
Warm air and cold air have densities?
Yes! Warm air is less dense, which is why warm air rises. Cold air is more dense so that's why it sinks.
When dense cold air meets less dense warmer air the air is pushed?
When dense,cold air meets less dense,warmer air, the warm air is pushed up
Do heated air particles become more or less dense?
Things (almost everything, including air) becomes less dense when it is heated. So warm air rises, and cold air falls.
Why is warm air pushed upwards by cooler air during convection?
Warm air is less dense, as the atoms are moving fast, creating the heat and spacing the atoms out farther apart. The atoms rise above the denser, slower moving atoms; therefore, hot air rises. (the hot air can't push below the cooler air, which is less dense. its like tennis balls bouncing on a wall)
Is Warm air is less dense than cold air?
No it's just less dense. For the same volume of air, warm air is lighter.
