Clouds – Is a accumulation of fine particles that consists of tiny waterdrops, ice crystals or both., that floats freely in the atmosphere.
Clouds can for example be created when air is forced over higher terrain like moutains. It is crucial that it’s beeing created for the nature, bacause some give rain to the surface. When water then vaporise new clouds are beeing created. (1)
Another important part is that it effects the airtemperature when clouds are covering the sun. The air temperature remain stable on nights because it reflect the radiation that comes from the surface. It is colder on nights when there is no clouds and these effects are clearly seen in desserts all over the world. (1)
There are almost no difference between fog and clouds, the only thing is that fog lie low on the surface.(2)
(1) (http://en.wikipedia.org/wiki/Cloud , 29 mars 2013)
(2) (http://en.wikipedia.org/wiki/Fog , 29 mars 2013 )
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