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"Heat" itself does not rise; heat transfers [moves] by conduction, radiation, and convection [convection is the one that best relates to what your question asks].
Your question refers to a warmer fluid [gasses as such as air for one example, or the same thing occurs in liquids, as water for one example] rising in cooler surrounding fluid.
The reason a warmer fluid [gas or liquid] rises in surrounding fluid is as answer one and two state, as both are correct in that both are causes, except that one is the cause for the other.
The combined answer is: As the average kinetic energy of the atoms of a fluid increases, the density of the fluid becomes less [it get "lighter"] and therefore rises ["floats"] in the surrounding fluid until it reaches a level where its temperature and density are the same as the surrounding fluid [equilibrium]. At that point the mass of fluid will cease to rise.
We refer to this process as "convection."j3h.
Answer Ok so we're all right.Except that "right" is subjective and only correctly classified when we inject perspective. Heat will always rise with respect to the ground we walk on, no matter the temperature, state of matter, or any other physical property.
The true reason that heat rises is due to something not yet mentioned... GRAVITY! To be more precise, in a positively excited atom/molecule, the electrons create a larger orbital shell whereby making the atom/molecule as a whole more "empty" or "porous", void of matter. Believe it or not, this minutely small difference is enough to slightly loosen gravity's electromagnetic grip on the atom/molecule allowing it to slip further away from gravity's source... the planet's core. This is why even a lone positively excited atom/molecule in a vacuum will rise toward the top of the container, just as it would if there were trillions.
Answer - RebuttalGravity as discussed above, is not the cause, but instead the DIFFERENCE IN BOUYANCY created by the "... more 'empty' or 'porus...' thus LESS DENSE weight of the fluid/gas molecule. The change in density does not change the mass of the molecule.
Wiki User
∙ 12y ago
Wiki User
∙ 9y agoHot gases tend to rise because it is less dense. As molecular motion speeds up so does the distribution of molecules.
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Why will a rise in temperature result in a rise of sea levels?
Atmospheric pressure will rise due to the heat level
If more heat is trapped in the atmosphere how will the earths temperaturr change ?
it will rise
When water vapor condenses into a liquid does temperature rise?
Yes. There is latent heat release when vapor condenses.
What are the five steps in cloud formation?
1. dust particles heat up 2. they rise 3. as they rise they cool 4. they cool to dew point 5. makes a cloud.
Will temperature rise if it's hot?
Heat is measured by temperature, so obviously if it's hot, temperature is high.
Why does your temperature gauge rise and lower only when you have the heat on?
Why does your temperature gauge rise and lower only when you have the heat on?
How does lifting by heat cause air to rise?
Heat speeds up molecules, this causes the particles to rise
Does heat rise or hot air rise?
Heat is the energy of the hot air. Therefore hot air rises
What things can effect air to rise?
Heat can cause air to rise :)
Does radiated heat rise?
yes
Why will a rise in temperature result in a rise of sea levels?
Atmospheric pressure will rise due to the heat level
Does cold rise and heat sink?
No, cold sinks and heat rises.
What happens to an object's temperature when you heat?
The temperature of the object will rise because of the heat.
Does gravity allow heat to rise?
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Add this to air to make it rise?
heat
What does heat makes air do?
Heat makes air less dense and therefore rise.
What happens to an objects temperature when you ad heat?
The temperature of the object will rise because of the heat.
