Yeah, clouds.
From wikipedia:
A cloud is a visible mass of condensed droplets, frozen crystals suspended in the atmosphere above the surface of the Earth or another planetary body, such as a moon. (Clouds can also occur as masses of material in interstellar space, where they are called interstellar clouds and nebulae.) The branch of meteorology in which clouds are studied is nephology.
On Earth the condensing substance is typically 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 gray 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, clouds would appear darker because the water that constitutes the cloud droplets strongly absorbs solar radiation at those wavelengths.
2007-10-01 12:26:18
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answer #1
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answered by Anonymous
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hah! yang ini I tak pandai tapi you boleh ajar I macam mana ya? Earth's water is often in circulation, and the water cycle, additionally user-friendly because of the fact the hydrologic cycle, describes the non-supply up circulation of water on, above, and below the floor of the Earth. because of the fact the water cycle is actual a "cycle," there is no commencing up or end. Water can substitute states between liquid, vapor, and ice at various places interior the water cycle, with those approaches occurring interior the blink of a watch and over hundreds of thousands of years. even although the steadiness of water in the international continues to be somewhat consistent over the years, guy or woman water molecules can come and circulate in a rush. The water interior the apple you ate the day formerly today would have fallen as rain 0.5-way international final year or would have been used one hundred million years in the past by way of Mama Dinosaur to furnish her toddler a tub.
2016-12-14 05:07:01
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answer #2
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answered by ? 4
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There is a difference between drops of water and droplets of water.When water vapour condenses on condensation nuclei, we get water droplets(droplets of water) and these are very tiny particles which float in the air in the form of clouds.
But when many such droplets combine together we get water drops(drops of water) which is vary large when compared to droplets and they can not float in air. They only fall as rain.
So, it is not possible for millions of water drops to remain suspended in the sky.
2007-10-02 01:27:05
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answer #3
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answered by Arasan 7
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Absolute Zero. in reference to degrees. It would freeze along with time and life, we will never know.
2007-10-02 00:56:35
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answer #4
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answered by acot_anthonym 4
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a cloud will only form if total saturation has been acheived
to learn more see this link
http://www.srh.noaa.gov/srh/jetstream/synoptic/clouds.htm
2007-10-01 12:29:48
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answer #5
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answered by NWS Storm Spotter 6
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A cloud?
2007-10-01 12:19:53
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answer #6
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answered by Anonymous
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a glitch in the Matrix?
;)
It's fog!
.
2007-10-01 12:24:12
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answer #7
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answered by Anonymous
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