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Why is a black asphalt parking lot feels hotter to your bare feet than a concrete sidewalk does?
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Why does black asphalt road become hotter than a white cement sedewalk in the same amount of sunlight?
Black asphalt becomes hotter than a white cement sidewalk by one thing. The reason it gets hotter is because black attracts heat.
Part of the electromagnetic spectrum makes the sidewalk feel warm on a sunny day?
The sun emits all of the electromagnetic spectrum. The part that heats the sidewalk is the infrared region which is invisible and has a long wavelength. Dark objects absorb much more heat than lighter objects so that asphalt pavement will get much hotter than concrete.
Why does a black asphalt road become hotter than white cement sidewalk in the same amount of sunlight?
The darker the color of the road the more sunlight it absorbs. A white cement sidewalk is whiter which absorbs many of the colors making it cooler.
Explain as completely as possible why the asphalt was so much hotter than the concrete?
The concrete, being nearly white, reflected much of the Sun's infrared energy, while the asphalt, being black, absorbed much of the Sun's infrared energy. (Infrared radiation is associated with heat.)
Does the black top feel hotter than the sidewalk answered on 1 page?
Where is page 1?
Why does a black aspalt road become hotter then a white cement sidewalk in the same amount of sunlight?
White reflects sunlight (energy) back into space.
Why is the black top hotter than the sidewalk in summer?
Darker colors absorb more heat, that is why you seem more hot in a dark shirt, than in a lighter colored one.
Why does concrete that has been lying in the sun feel hotter than grass which has been in the same amount of sun?
The water in grass can evaporate in heat, reducing surface temperature. In addition, concrete is denser and retains heat better.
The lightly coloured objects absorb more heat?
It depends on the shape of the light object and how hot it can get because if it has power in it etc it can become pretty hot or else your sidewalk will just be hotter.
What is hotter blacktop or sidewalk?
Blacktop tends to get hotter than sidewalk because it absorbs and retains more heat from the sun due to its dark color and composition. This can make blacktop feel hotter to the touch compared to sidewalk.
How much hotter is the temperature above asphalt then it would be over ordinary ground?
The temperature above asphalt can be significantly hotter than over ordinary ground due to its ability to absorb and retain heat. Studies have shown that asphalt surfaces can be up to 50-70°F (28-39°C) hotter than the surrounding air, particularly in urban areas with a lot of asphalt surfaces.
Why materials contract when cooled?
Most things do contract when they are colder because the molecules are less agitated. When the item is warmer, the molecules in that object are very agitated causing them to spread apart, making the item larger. That is why they have "expanding spacers" in concrete sidewalks, because in the summer the temperature is hotter causing the concrete to expand. When the temperature is cooler, the concrete contracts back to its original state.
