Why do clouds form?

Answer

According to Met Office, clouds form when water vapor in the air condenses into tiny drops of water or ice crystals that then settle on dust particles in the atmosphere. Condensation happens when the air is saturated and cannot hold any more water vapor; this can occur when the amount of water in the air increases or when the air is cooled to its dew point.

According to Met Office, there are five factors that lead to the formation of clouds. Surface heating is when the ground is heated by the sun; the air in contact with the ground is then also heated and begins to rise, producing cumulus clouds. The topography of a region can cause the formation of clouds when air is forced to rise over hills or mountains and cools. Fronts, boundaries between warm air and cool air, cause cloud formation when a mass of warm air rises up over a mass of cold, dense air. The convergence of streams of air flowing from different directions and being forced to rise cause cumulus clouds to form. Finally, turbulence created by a sudden change in wind speed can form clouds. Because of the many ways in which clouds can form, there are a variety of cloud types of different shapes, sizes and textures.

Q&A Related to "Why do clouds form?"
Even though clouds come in a variety of shapes and sizes, they all have one thing in common: water. Without water, there would be no clouds. Clouds form when water evaporates from
http://www.life123.com/parenting/education/weather...
Clouds form when rising air, through expansion, cools to the point where some of the. water vapor. molecules "clump together" faster than they are torn apart by their thermal
http://wiki.answers.com/Q/Why_do_clouds_form
Lenticular clouds form when a tall geographic feature, such as the the top of a mountain, interrupts a strong wind coming up the side. The interruption in airflow creates a wind wave
http://www.ehow.com/about_6471010_do-lenticular-cl...
Towering Cumulus Stage: The first stage is the towering cumulus stage, or growth stage. The warm, moist air rises and cools, eventually condensing into a cumulus cloud. As condensation
http://www.quora.com/Clouds/How-do-Cumulonimbus-cl...
Explore this Topic
Clouds are formed when rising warm air expands and cools. Because cold air can't hold as much water vapor as warm air, some of the vapors condense onto minute ...
Clouds are formed when moist, warm air rises and expands in the atmosphere. The rising water vapor condenses and forms small water droplets which make up the clouds ...
The fluffy appearance of clouds is due to the water droplets that form them being blown upwards by moist air currents. These types of clouds are referred to as ...
About -  Privacy -  Careers -  Ask Blog -  Mobile -  Help -  Feedback  -  Sitemap  © 2014 Ask.com