How is cloud formed ?
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A cloud is composed of tiny water droplets or ice crystals that are suspended in the air. A series of processes have to happen in order for these water droplets or ice crystals to form into clouds in the atmosphere, and different types of clouds form from different processes. The four main ways that clouds can form are:
Surface HeatingMountains and TerrainAir Masses Being Forced to RiseWeather Fronts (cold or warm)All of these processes involve the cooling of air. Warm air is able to hold larger amounts of water vapor than cool air, so when air cools it is no longer able to hold all of the water vapor it was able to hold when it was warm. This extra water vapor begins to condense out of the air into liquid water droplets.
Typically, water vapor needs some sort of particle, such as dust or pollen, to condense upon. These particles are called condensation nuclei. Eventually, enough water vapor will condense upon condensation nuclei to form a cloud. The water droplets in the cloud may eventually fall down to Earth in the form of rain or snow (or other forms of precipitation).
PART 21) The first process is perhaps the simplest: the sun heats the earth and thus the air, this warm air rises, expands, and cools, forming clouds like in the image above.
2) Clouds are also formed when air encounters mountains or other topography. The air rises and cools and, again, the air cannot hold all of the water it held when warm so clouds form.
3) The air is also forced to rise when wind in a low pressure system forces the air to rise up. Related to number 2, if air is forced to rise because of topography that slopes upwards, clouds may also form.
4) Finally, weather fronts cause cloud formation. Specifically, warm fronts create clouds because the warm air rises above the cold air and cold fronts create clouds because the cold air displaces or moves the warm air up.
To conclude, many factors affect cloud formation, including topography, air temperature, and humidity.
Here's a very comprehensive link on cloud formation if you're looking for more.
Additionally, clouds can form in areas where precipitation has been ongoing or particularly heavy. The falling precipitation brings moisture lower down in the atmosphere, and we get a ragged layer (either stratus or stratus fractus) form, usually within 1,500 ft of the ground or lower.
Finally, since Fog is cloud at the surface of the Earth, in areas where fog has formed, surface winds can lift the fog, once it is aloft it becomes a cloud layer (stratus).
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Answer:
Clouds are created when water vapor, an invisible gas, turns into liquid water droplets. These water droplets form on tiny particles, like dust, that are floating in the air. ... That means some of the liquid water in the towel or bowl changed into an invisible gas called water vapor and drifted away into the atmosphere.