Ive always wondered?!

Question

when you breathe and open your mouth big , hot hair comes out. but when you make your mouth hole small and breathe cold air comes out. does anyone know why?1 hah

Answer 1

that would be weird if hot hair came out of your mouth =x

j/k... well, actually i'm not kidding. but yeah...

just ignore my answer. i just wanted two points. buahaha.

Answer 2

I've never really thought about that until now i am not sure??? Now I am wondering too.

Answer 3

not sure, look it up on google

Answer 4

its cos when u breathe when ur mouth is open wide it comes from the insides. like your gonna have to inhale and exhale.. so the air is hot.. but when ur mouth is small the air just comes from the air from ur mouth u dont need to inhale and exhale so the air wont come from inside.. that 's why its cold

Answer 5

If you've got hot hair coming out of your mouth, ever, see a doctor immediately.

Answer 6

i dunno

Answer 7

It's because the deeper the breath, the more heat comes out and the more narrow it is... the less moisture and heat is able to escape. That's just what I think. Not sure about this at all.

Answer 8

Because when you are sending it out in a stream like that it is a smaller amount so the air has time to cewl it down before it hits your hand.  When you open your mouth big and blow out the air is in such a large quantity that it can not physically cewl it down fast enough.

Answer 9

when your hole is smaller an the air is more focusted so you blow faster

when your hole  is bigger the air is less focusted to the air is cabable of going all over the place

duh

Answer 10

Do you mean hot air comes out?.....not hot hair.....lol.

Answer 11

Air cools the faster it moves (this is why a fan cools you). Big mouth, slow air - small mouth faster air.

Answer 12

its to do with your ambomonictikics in your mouth - gosh everyone knows that :P

Answer 13

more space for air to pass and btw u said hair lol sorry i get typos 2!  

Answer 14

this is the best answer i can think of

1)  hot air comes out because your breathing out carbon because your lungs and heart have taken out all the "good" parts of the oxygen and used it to beathe

2) and when you breathe in you get fresh air so its colder then what you just breathed out

3) try this, breathe into a paper bag and then start breathing in and out in it and then all the air is hot and then you might see what i mean clearer

Answer 15

Water has three phases: liquid, gas, and solid. Water vapor is the gas phase, and ice is the solid phase. What you are seeing when you see your breath, says Dennis Feltgen, a meteorologist at the NOAA National Weather Service in Silver Spring, Maryland, are little droplets of water condensing out of a gas that's in your lungs. Our breath contains a lot of vapor because our lungs are quite moist. When we head outside on a cold day, water molecules (the vapor) in our breath lose the energy that, when they're warm, keeps them moving. Instead of bouncing around, they crowd up next to each other. And as they slow down, the molecules change from a gas state to denser liquid and solid states — the visible cloud of tiny particles of water and ice that you see when you exhale.

Answer 16

It's not so much the size your mouth makes as the speed with which you exhale.  A small hole forces the air out faster, creating the same effect as wind or a fan.  The quick movement of air over your skin carries off heat, the same way that a fast moving breeze feels cool.  Otherwise, the air moves slowly, and doesn't remove heat as it passes.  Your breath is naturally warm, so by not changing it (i.e. breathing normally rather than blowing) it feels the way it naturally would.

Answer 17

Hmmm...good point! I guess it's because when your mouth is opened smaller, it's almost like wind coming out of your mouth because the air has to move faster to get out of a smaller opening. And when your mouth is open wider, the air doesn't have to move so fast so it kind of relaxes and gets warmer. Does that answer your question? Just a guess

Answer 18

Surface area. When your mouth is opened wide, a large amount of breath is being exposed to only a small area of cooler flesh (your lips). So it does not cool off. When you pucker up and blow out, a small amount of warm breath is being exposed to the cooler flesh and is cooled off.

Also, there actually a tiny bit of an air-conditioning effect as the compressed breath re-expands it cools off. Blow very slowly through the small opening and you'll see it's still warm.

Answer 19

That sounds like a fun experiment!  But there are two things going on.  If you hold your breath or exhale slowly, the air has time to equalize its temperature with that of your body.  That might heat it or cool it.  The other is that moving air tends to make you feel cooler.  It is carrying away from your body the air your body has just heated.  It also increases evaporative cooling on your skin.