Why does heat flow from a hot body to a cold body?

Question

What is the prinicple behind this?

But what do they CALL this occurence?

Answer 1

the particles of a body that has heat or is warm/hot is vibrating at a speed faster than usual. when it comes in contact with another body that is of room or lower temperature, the particles of the hot body will hit the particles of the cold body, passing on energy resulting in these particles vibrating faster as well. this process continues from one particle to the next in the cold body, spreading the heat energy from the hot body to the cold.

as a final result, the particles in both bodies will finally reach the same vibrating speed ie. they will have the same temperature.

hope you get this.

Answer 2

When a physical body (object, fluid, etc.) is at a different temperature than its surroundings or another body, transfer of thermal energy, also known as heat transfer, occurs in such a way that the body and the surroundings reach thermal equilibrium. Heat transfer always occurs from a hot body to a cold one (this is the second law of thermodynamics). Transfer of thermal energy occurs mainly through conduction, convection or radiation.

Answer 3

For the same reason that anything in high concentration spreads away from itself.

Entropy.

The entropy of a given system always increases. This is the second law of thermodynamics.

Energy confined in a tight space is highly ordered. Release it into a larger area and the entropy of the entire system has increased because it can be less ordered and more random.

This applies to salts, acids, heat, light, information, etc.

Although if you are talking about just a physical transfer of such energy item to item that can be called conduction. Convection, by contrast, utilizes the air between them to transfer heat.

Answer 4

It's the principle of thermal energy. Cold is the absence of heat. Heat is the energy released when atoms move very quickly. When something hot is put against something cold (bodies or otherwise), the heat energy is transferred to the object as well as the air around the object, making the atoms in the object and air move faster. Ever see your mom hold her hand slightly above a skillet to see if it was warm?

Answer 5

Heat is a form of electromagnetic energy. It is infrared energy so it radiates from the source just like light does. This is radiant heat and spreads by radiation.

But heat can also spread indirectly. Heat energy causes the molecules of matter to vibrate rapidly. Those molecules move around and colide with other molecules and thus heat spreads via convection and conduction. The molecules gradually slow down, which is the same as cooling off, as the heat energy disperses.

Answer 6

Actually it is very simple. Not that I'm calling you dumb, but after imagining that atoms are like small balls and when one side of these balls is vibrated, the whole balls start to vibrate at some point. Heat equals to energy. Energy does work so the vibrating metal molecules will make the close by molecules vibrate.

Answer 7

I guess it's just the difference in the extremities. Like how if you've been outside in the heat for a while and you go into a nice, air conditioned house, it almost feels cold until you get used to it. It's just your body reacting to the extremities.

Answer 8

it really is like asking why darkish does no longer flow from darkish room to person-friendly room. chilly is the absence of warmth ... it really is a minimum of how we outline it... when you consider that we outline warmth as thermal power... so chillier gadgets have a lot less thermal power ================== if a warm section is next to a cold section the warmth will flow for the era of to the chilly section to target to make both elements the same temperature even as both elements are same then the flow throughout the time of the point of contact will end and both rooms might want to have same temperatures that's the outfitted to any gadget needs to bypass to the bottom power factor..

Answer 9

one of the principle ideas of chemistry is that all heat travels from where it is hot to where it is cold...like when you open a refrigerator...heat actually rushes INTO the refrigerator and NOT out ...it's one of those basic rules that dictates the behavior of heat.

Answer 10

law energy. cuz energy alwayz flow high to low.