Cloud is a mass of small water droplets that float in the air. Clouds change shape continually because parts of the cloud evaporate when touched by air that is warmer than the cloud. Cloud shapes change because of the action of winds and air movements.
There are Low Clouds that look like a smooth, even sheet. It has light and dark areas on the bottom and piles of clouds in the layer. These clouds are less than 6,000 above sea level.
Middle Clouds usually lie from 6,000 to 20,000 feet above the earth.
High Clouds are delicate wispy that appear high in the sky are usually 35,000 feet or higher.
Clouds form when warm, moist air moves up the side of a hill or over a mountain range and is lifted and cools by expansion. The cooling causes the water vapor to condense and form clouds that hang over the mountains.
They are near the ground, but not for very long because of this cooling and expansion.
2006-12-06 12:30:31
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answer #1
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answered by Nancy S 6
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cloud is a visible mass of condensed droplets or frozen crystals suspended in the atmosphere above the surface of the Earth or another planetary body. The branch of meteorology in which clouds are studied is nephology.
On Earth the condensing substance is water vapor, which forms small droplets or ice crystals, typically 0.01 mm in diameter. When surrounded by billions of other droplets or crystals they become visible as clouds. Dense deep clouds exhibit a high reflectance (70% to 95%) throughout the visible range of wavelengths: they thus appear white, at least from the top. Cloud droplets tend to scatter light efficiently, so that the intensity of the solar radiation decreases with depth into the cloud, hence the grey or even sometimes dark appearance of the clouds at their base. Thin clouds may appear to have acquired the color of their environment or background, and clouds illuminated by non-white light, such as during sunrise or sunset, may be colored accordingly. In the near-infrared range, however, clouds would appear darker because the water that constitutes the cloud droplets strongly absorbs solar radiation at those wavelengths.
so..u can see that..clouds..are..light..so they stay up there...
read the link..u can see the property of the cloud..and u can understand why they up there..for some reason...
2006-12-06 12:24:04
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answer #2
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answered by L_n_C_fReAk 3
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Actually, clouds can be on the ground in some occasions. These clouds that are near the ground are called fog and that is why sometimes during the year you see alot of fog.
2006-12-06 12:18:51
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answer #3
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answered by salimdist 4
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clouds do come to the ground we around here call that fog its just moisture in the air
2006-12-06 12:21:32
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answer #4
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answered by mschmitty920 3
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They do, its called fog
2006-12-06 12:22:23
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answer #5
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answered by Anonymous
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they do...
it's called fog
2006-12-06 12:21:06
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answer #6
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answered by chefzilla65 5
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