condensation of H2O in air when cooled and high dew point or humidity, like your breath on a cold day
2006-12-21 01:12:19
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answer #1
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answered by Courageous Capt. Cat 3
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Fog is a cloud in contact with the ground. Fog differs from other clouds only in that fog touches the surface of the Earth. The same cloud that is not fog on lower ground may be fog where it contacts higher ground such as hilltops or mountain ridges.
The foggiest place in the world is the Grand Banks off the island of Newfoundland, Canada. Fog is frequent here as the Grand Banks is the meeting place of the cold Labrador Current from the north and the much warmer Gulf Stream from the south. The foggiest land areas in the world are Point Reyes, California and Argentia, Newfoundland, both with over 200 foggy days a year
2006-12-21 09:13:09
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answer #2
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answered by bwfcphil 2
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Precipitation fog forms when rain or snow falls.. As precipitation falls into drier air below the cloud, the liquid drops or ice crystals evaporate or sublimate directly into water vapor. The water vapor increases the moisture content of the air while cooling the air. This often saturates the air below the cloud and allows fog to form.
Upslope fog is very common along large hills and mountains. It forms when winds blow up the side of a hill or mountain, which cools the air.
Valley fog forms in mountain valleys during winter and can be more than 1,500 feet thick. Often, the winter sun is not strong enough to evaporate the fog during the day. When the air cools again the following night, the fog often becomes thicker, which makes it even harder for the sun to burn it off the following day. These fogs can last for several days until strong winds blow the moist air out of the valley. The tendency for cool, dense air to pool at the bottom of valleys also enhances valley fog.
2006-12-21 09:13:53
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answer #3
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answered by guawsgirl 2
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You did not ask what IS fog. You asked what MAKES fog.
It is the differential pressure of air above the earth, brings down the cloud from up above to very low altitude, i.e., the surface of earth.
You did not ask this one: (I will tell you anyway).....Weather people predict fog by mapping the air pressure above earth.... called the isobars. It can tell them the likelyhood of fog occuring at such and such a day and how long it will last.
2006-12-21 09:49:12
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answer #4
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answered by Nightrider 7
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The simplest explanation: fog is basically a cloud that is sitting low on the ground.
2006-12-21 09:14:02
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answer #5
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answered by beanie 5
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you need 3 letters G, F, O
then simmer the letters on a low light for 20 mins
drain off any excess and pour out
then you should have FOG
2006-12-21 09:17:28
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answer #6
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answered by GoreyAlan Fáilte 4
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Fog is actually a low cloud! Clouds are made up of tiny droplets of water.
I want best answer!
2006-12-21 09:12:26
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answer #7
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answered by Dee 3
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I heard this on the radio last night, Extremely high pressure causes the ground level to become much colder than higher up in the atmosphere, which creates more moister in the air which cling to dirt and pollution particles particles in the air which causes the mist.
or something like that anyway
2006-12-21 09:19:56
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answer #8
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answered by Anonymous
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Fog is made when you take the "R" out of frog.
2006-12-21 13:22:11
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answer #9
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answered by beagle1 3
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Generally speaking three important factors decide the formation of fog.Enough moiture in the air ,clear night sky and calm wind particularly in the tropical countries.
2006-12-22 09:35:20
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answer #10
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answered by Arasan 7
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clouds comming down low level "all the polution can not escape now "so be carefull what you are breathing when you go out in the fog!!!!!!"
2006-12-21 09:13:03
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answer #11
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answered by Anonymous
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