Warm air expands and cools as it rises; the temperature decreases below dew point, so the water vapour changes phase from gas to liquid
Rising warm air undergoes expansion and cooling. This leads to condensation and cloud formation.
fog clouds
When a cyclone forms, warm, moist air over the ocean rises up from the ocean surface. As this warm, moist air rises, it cools off, and the water in the air forms clouds. The cycle keeps going because air rushes in to fill the void left as the warm moist air rises. This new air also becomes warm and moist and so it rises, too. Again, the cycle continues. Warm air rises, the surrounding air swirls in to take its place, and so on. The whole system of clouds and wind spins and grows, because it is being constantly fed by the ocean's heat and water evaporating from the surface. This causes massive rain clouds to develop.
water vapor
a cloud is a collection of millions of tiny water droplets or ice crystals .clouds form as warm air rises and cools
Warm, moist air that rapidly rises.
Clouds form when warm moist air rises, cools and condenses.
fog clouds
Evaporation.
Condensation by warm air
When warm moist air rises it cools and condenses.
clouds
CLOUDS
Water condenses out of warm moist air to form clouds when it hits cooler air.
When a cyclone forms, warm, moist air over the ocean rises up from the ocean surface. As this warm, moist air rises, it cools off, and the water in the air forms clouds. The cycle keeps going because air rushes in to fill the void left as the warm moist air rises. This new air also becomes warm and moist and so it rises, too. Again, the cycle continues. Warm air rises, the surrounding air swirls in to take its place, and so on. The whole system of clouds and wind spins and grows, because it is being constantly fed by the ocean's heat and water evaporating from the surface. This causes massive rain clouds to develop.
Cumulus clouds are those that look like puffy white cotton balls in the sky. They form when warm air rises and meets cold moist air.
Cumulus clouds is an resault of updraft of warm,moist air in tall clouds.
condensationCondensation creates clouds. Clouds develop in an air mass that becomes saturated (relative humidity becomes 100%).Read more http://www.kgbanswers.com/in-what-process-must-occur-for-clouds-to-form/4008725#ixzz1EQ3cx57a