why blue is cool and red is hot?

Answer 1

Nearly all of the fires that we see are red, both because we rarely see anything heated to very high temperatures and because of the properties of carbon and its molecules. Meanwhile, the molecular properties of water make it bluish-green. Since these are the hot/cold things we most often see, our minds probably associate hot and cold with them.

Our bodies might also bias us toward thinking red is hot and blue is cold. When we get warm, more blood flows to our skin in an effort to cool us. The result is that our skin looks red. If we are cold, the body tries to conserve heat by shunting blood away from our skin, giving out skin a bluish tinge.

Answer 2

probably because of the association with blue ice and red fire

ironically blue stars are hotter than red ones

Answer 3

Ok here is why,
ROYGBIV
Red Orange Yellow Green Blue Indigo Violet
are your seven main colors
now strike a match stick and when it lights it goes from blue to yellow, bright orange when it starts to die out the flame goes from orange to blue the black

Answer 4

maybe cause when we burn we are red, or coals are red when they are hot. and if we are freezing our lips are blue or because ice seems blue, blue isn;t really a warm color but everything red is.......I am guessing cause I don't really know

Answer 5

Depends on what you're talking about....
Blue stars are hotter than red ones.

Answer 6

because the ocean is blue (cool) and fire is red (hot) thats what i think of anyway.....

Answer 7

Water is thought of as blue...which cools.
Fire is thought of as red...which heats.

But, when you think of it...the hotest fire is blue.
Hmmmmm.

Answer 8

Sky and ocean is cool
Sun is hot

Answer 9

I think it is an interesting question. Unfortunately, I don't know the answer.

Answer 10

what kinda question is that