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2006-08-30 06:56:10 · 10 answers · asked by swise1974 1 in Science & Mathematics Earth Sciences & Geology

10 answers

Black sand, because black color absorbs heat and radiation.

2006-08-30 06:59:06 · answer #1 · answered by THE UNKNOWN 5 · 0 0

The sea pounds the lava chunks into little rocks and then pounds the little rocks into tiny pieces or sand. Black sand is much hotter than white sand when the sun shines on it because it absorbs the sun's energy while the white sand reflects it away. Black is not a color but the absence of reflected light. On sunny days a car with dark paint will be hotter inside than a car with light paint.
An object that absorbs all the energy that falls upon it is called a Blackbody. Because it reflects no light, it would appear black to an observer. (No perfect blackbody exists in nature, but surfaces coated with carbon black or soot absorb 97 percent of incident energy.) A blackbody is also a perfect emitter. At any specified temperature, a blackbody emits, in each part of the electromagnetic spectrum, the maximum energy obtainable from any radiator because of its temperature alone. Bud doesn't really understand that, he just read it somewhere and repeats it to impress people.

2006-09-01 03:16:03 · answer #2 · answered by hamdi_batriyshah 3 · 0 0

Black sand will get hooter because dark colors absorb more light and since light is energy, the Law of Conservation of Energy says that no energy can be lost or gained so the light is turned to heat. The black sand will get hotter faster.

2006-08-30 14:02:49 · answer #3 · answered by just tht kid over there 3 · 0 0

By hotter, do you mean feels hotter? When exposed to the same temperature, i.e. the sun's rays, both will achieve the same measured temperature. The problem becomes one of heat transfer for "felt temperature". Put a pieces of wood and metal in the yard exposed to the sun's rays. Wait about 3-4 hours and then touch both. The metal feels hot. This is because the metal transfers heat to your finger better than the wood. Coefficient of heat transfer is the reason.

2006-09-03 09:13:50 · answer #4 · answered by jack w 6 · 0 0

Both would be the same temperature if exposed to no light. The black color occurs because all light spectrums (and light energy) are being absorbed, therefore, it becomes hotter in the presence of light energy.

Bladders used in camping showers are always black in order to heat the water inside, which uses this same principal.

2006-08-30 15:46:58 · answer #5 · answered by jazznsax 2 · 0 0

black sand is hotter

2006-08-30 14:01:54 · answer #6 · answered by vicky l 6 · 0 0

Black because it absorbs all the colors of light but white reflects all the colors of light..

2006-08-30 14:03:57 · answer #7 · answered by Anonymous · 0 0

black

2006-08-30 14:21:26 · answer #8 · answered by A 4 · 0 0

black, unless you are only heating the white!

2006-08-30 19:35:22 · answer #9 · answered by Koklor 2 · 0 0

white! because it reflects the light onto ur feet! black takes in heat, not giving any out. this is a scientific fact

2006-08-30 14:16:24 · answer #10 · answered by SHUGAR 2 · 0 4

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