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Because the air that you breathe out has already been warmed while it was inside your body and it passes that warmth on to your hands.

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Q: Why does blowing in your hands heat them up?
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What heat transfer is used when a fan is blowing?

Actually, there isn't any heat transfer when a fan is blowing. But, if you really need the answer, the closest one would be radiation.


If you have wet hands and pick up a piece of metal that is below freezing point you may stick to it This doesn't happen with wood Why not?

Metals have high heat conductivity compared to wood. When your hands touch a piece of wood the surface layer of the wood heats up to your skin temperature quickly and does not transfer this heat very quickly to the bulk of the wood. Therefore your skin ends up transferring very little heat and does not cool down very much. When you pick up a piece of metal heat begins transferring from your hands to the surface of the metal and is easily carried away into the bulk of the metal. The surface layer of the metal therefore doesn't heat up very quickly (it's passing most of the heat your hands give it into the bulk) and your skin therefore loses a lot of heat and cools down a lot. It some cases the outside of your skin can quickly drop below freezing. If your hands have any moisture on them then this moisture might freeze, "sticking" you to the piece of metal.


What if A woman picks up a cup of hot cocoa and feels her hands get warmer. What statement best explains what is happening?

That means that heat energy is transferred from the hot cup, to the hands.


Why is kinetic energy changed to thermal energy when you rub your hands together?

Because when you rub your hands together, it causes the molecules on your hand to move in random motion, which is thermal energy.


What happens when you rub your hands together vigorously?

Yes, rubbing your hands together makes friction. This friction makes heat.

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Why water bath is used to heat naphthalene?

To stop it from blowing up.


Why is heat not blowing out when you turn the heat on in your car?

Car heaters need a few moments to warm up.


How can be calculated heat element power to heat-up a insulated cabinet.?

i can heat up stuff with my hands


2004 explorer rear heat not blowing?

heat and a/c barley blowing in back?


Your car not blowing air or heat what's wrong?

Car not blowing air or heat


Why is your breath warm when you breath on your hands?

because the flesh on your hands then heat up the air


Jeep Wrangler has no heat?

What do you mean by "has no heat"? No air blowing out, blowing out cold air when heater is on, blowing nothing at all? Heater not turning on? What specifically is happening?


What dynamite used for?

dynamite is used for blowing things unwanted up. if its put in the wrong hands it can be very dangerous.


What is dynamit used for?

dynamite is used for blowing things unwanted up. if its put in the wrong hands it can be very dangerous.


What makes your hands heat up when you rub them together?

friction


No heat Pontiac Montana?

Ask this question again. Is the question no blowing or blowing cold?


Does Blowing on a cup of tea make it cooler?

Yes, the food that is hot trades its heat inside with the cooler air around it blowing on it makes this process speed up.