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For clouds to form, you need several things:
1. Water vapour in the air
2. Falling temperatures
3. Condensation nuclei: tiny little particles of soot, ocean salt, dust
Warm air holds water vapour much better than cold air does. Cold, humid air can't hold as much water as it could when it was warm. So, if you have a bunch of warm, humid air, and temperatures fall, the water vapour in the air turns back into tiny little droplets of liquid water. This is called condensation. But in order to form a cloud, the droplets need something to condense on,which is why condensation nuclei are necessary.
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What type of clouds form with unstable atmospheric conditions?
cirrus clouds
Can cirrus clouds form snow?
Cirrus clouds are high enough to be at a low enough temperature for the water droplets to form into ice crystals. However, Cirrus clouds are not precipitation clouds, so no snow or rain can fall from them. The clouds that can cause snow to fall in the right conditions are Nimbostratus and Cumulonimbus clouds.
Under what conditions would dew not form?
Dew does not form damp and wet conditions.
What kind of weather conditions happen in a low pressure system?
A Low Pressure System is the kind of system that allows clouds to form. When clouds form, you can get a cloudy day, with most low pressure systems, the clouds bring the rain.
What are lens-shaped clouds called How are they formed?
http://www.crystalinks.com/lenticular.html Lenticular clouds, technically known as altocumulus standing lenticularis, are stationary lens-shaped clouds that form at high altitudes, normally aligned at right-angles to the wind direction. Where stable moist air flows over a mountain or a range of mountains, a series of large-scale standing waves may form on the downwind side. Lenticular clouds sometimes form at the crests of these waves. Under certain conditions, long strings of lenticular clouds can form, creating a formation known as a wave cloud.
Do clouds form over deserts?
Yes, under the proper conditions, clouds can and do form over deserts.
What type of clouds form with unstable atmospheric conditions?
cirrus clouds
Under what conditions do thunderstorms form?
basic ingredients moisture- forms clouds and rain unstable air it is warm and it rise rapidly.
What two conditions are nessesary for clouds to form?
Clouds are at their coldest point and the air has to be reached its saturation.
How do weather conditions at night differ from the conditions during the day?
because in the night more clouds form and block the sun in the day there are not many clouds to block the suns rays
Why do clouds usually form high in the sky instead of near earths atmosphere?
Clouds are in earth's atmosphere. Clouds form whem moisture in the air condenses, and usually conditions mnear the gcround are too warm for moisture to condense. Instead, clouds form at higher altitudes where it is cooler.
Can cirrus clouds form snow?
Cirrus clouds are high enough to be at a low enough temperature for the water droplets to form into ice crystals. However, Cirrus clouds are not precipitation clouds, so no snow or rain can fall from them. The clouds that can cause snow to fall in the right conditions are Nimbostratus and Cumulonimbus clouds.
Under what conditions would dew not form?
Dew does not form damp and wet conditions.
What kind of weather conditions happen in a low pressure system?
A Low Pressure System is the kind of system that allows clouds to form. When clouds form, you can get a cloudy day, with most low pressure systems, the clouds bring the rain.
Why rocks are differ?
Because of how they form and what conditions they form under.
Why do clouds form well above the ground?
The water vapour in the air does not condense until the air temp is low enough. This temp is reached as clouds go higher. Some clouds eg fog do form at ground level when conditions are right.
Do cumulus clouds predict fair weather?
Cumulus cloud often do indicate fair weather, but not always. Under the right conditions cumulus clouds can develop into thunderstorms.
