I am doing a project. I put half a cup of water in a 2 zip lock bags then put a white and black piece of construction paper beneath the bags. I need to know the reason why the black construction heated the water more during the 30 minute time span.
2006-08-03 11:04:04 · 12 answers · asked by Anonymous in Education & Reference ➔ Homework Help
Black absorbs heat! White reflects heat!
2006-08-03 11:06:35 · answer #1 · answered by Jimmy Pete 5 · 0⤊ 0⤋
The energy from the sun is transported in the form of light. Since black-colored objects do not reflect any wavelength of light (that's why they are black), they absorb it, thus absorbing the energy.
On the contrary, white-colored objects reflect most of the visible light (that's why they are white) -- therefore they don't absorb as much energy (they still do, a little bit, from the infrared light, but not nearly as much).
2006-08-03 11:09:52 · answer #2 · answered by A.R. 3 · 0⤊ 0⤋
Black paper fails to reflect all parts of the spectrum, including infrared. We perceive it as black due to the lack of reflection. Therefore, black paper absorbs all parts of the spectrum, including infrared, which is the light frequency that imparts heat. The absorbed infrared heats the water.
2006-08-03 11:12:46 · answer #3 · answered by yellowcab208 4 · 0⤊ 0⤋
As alot of people have already answered: Black surfaces absorb heat, whilst white surfaces reflect it.
2006-08-03 12:43:18 · answer #4 · answered by thatgirl. ♥ 2 · 0⤊ 0⤋
Black absorbs light energy converting it to heat, whereas white reflects the light and doesn't warm up. This is also why dark colored cars heat up more quickly than light colored cars. Dark clothing vs. light clothing, etc. etc.
My roommate is trying to convince me that this is why white people are cooler than black people, but I'm not buying it.
2006-08-03 11:10:52 · answer #5 · answered by TheWiseOne 2 · 0⤊ 0⤋
White paper reflects heat, black absorbs it.
This is true of any white or black surface.
2006-08-03 11:08:19 · answer #6 · answered by James T 3 · 0⤊ 0⤋
Black absorbs all the light that hits it, white reflects most of it.
2006-08-03 11:07:53 · answer #7 · answered by infernomanor 3 · 0⤊ 0⤋
Well it mite be. Because Black draws heat!! If you dont think so go out side and put you hand on a black car. And then on a white car and see witch is the hotest!! If the temp is 90 and you put your hand on a black car you will probley get a blister on your hand from it!! So Black draws Heat!! and you heard it here first from a REAL Nutcase!!""NUT'S""..PS ..did i win...did i win...did i win???
2006-08-03 11:09:46 · answer #8 · answered by dl200558 5 · 0⤊ 0⤋
white reflects heat
black absorbs heat
2006-08-03 11:08:22 · answer #9 · answered by Anonymous · 0⤊ 0⤋
black absorbs heat easier while white reflects it
2006-08-03 11:07:45 · answer #10 · answered by LW 4 · 0⤊ 0⤋