Nate
Lv 5
Nate asked in Home & GardenMaintenance & Repairs · 4 months ago

# Does heat move to cold or cold move to heat?

Scenario: My cousin said if its winter and you open the door then cold air doesn't come in, instead the warm air moves out of the house and that's why it gets cold.

Is this true or has he just been drinking too much again?

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• JASON
Lv 5
4 months ago

Hear is energy, cold is a lack of heat energy, so heat moves to cold.

• 4 months ago

Air is exchanged

• Anonymous
4 months ago

Both. On a cold day opening the front door and heat will escape. In the summer opening the front door and the cool air will escape.

• 4 months ago

The second law of thermodynamics says that heat flows naturally from an object at a higher temperature to an object at a lower temperature, and heat doesn’t flow in the opposite direction of its own accord.

The law is certainly borne out in everyday observation — when was the last time you noticed an object getting colder than its surroundings unless another object was doing some kind of work? You can force heat to flow away from an object when it would naturally flow into it if you do some work — as with refrigerators or air conditioners — but heat doesn’t go in that direction by itself.

• Joe
Lv 6
4 months ago

Heat to cold is the answer !

• y
Lv 7
4 months ago

Heat is actually measurable. Cold is basically the absence of heat. A very simple way to think about it is heat is people. The more people the more heat the more crowded they are. They want to move to where it is less crowded(less heat) So when the opportunity comes up(opening that door) they try to rush through it.

Of course with opening the door to the outside colder air, other things also come into play and such. But for your question, heat moves to where there is less heat.

• 4 months ago

It moves in both directions. In your example the cold air will come in near the bottom of the door and the warmer air will leave towards the top.

• 4 months ago

opening the door allows the molecules on either side to intermix, thus both moving heat outside and cold inside. warmer molecules also tend to be farther apart and thus heated air is less dense and rises -- meaning the open door allows heated air to escape to upper altitudes [away from the house]

your cousin is correct if the case is thermal radiation, but molecules do not follow the same laws.

Source(s): grampa
• 4 months ago

Day one of chemistry class we learn that heat moves from a warmer object to a cooler object. Delta T.

• Nuff Sed
Lv 7
4 months agoReport

So, when I open my fridge, why does cold air come out and surround my ankles in the warmer kitchen? Perhaps your model fails to include other large driving factors.

• Rick B
Lv 7
4 months ago

cold does not exist/move. Cold is an absence of heat. Loss of heat (heat moving away) produces cold.