Formation of Clouds
Formation of Clouds What is a Cloud? Clouds are composed of water droplets or ice crystals that are so small and light that they may float in the air. But how does the water and ice that builds up clouds enter the atmosphere? And why do various sorts of clouds ? Water vapour evaporates into the atmosphere The water and ice that make up clouds travel into the sky as water vapour, the gas form of water, in the form of air. Water vapour enters the atmosphere mostly through evaporation, which occurs when liquid water from the ocean, lakes, and rivers evaporates and travels in the air. When air rises in the atmosphere, it becomes cooler and less pressurised. Some of the water vapour condenses when the air cools. Water vapour condenses as air pressure lowers. The vapour condenses into little water droplets, forming a cloud. A Cloud is formed when water vapour condenses When water vapour has a particle to condense on, it is easier for it to condense into water droplets. These particles, which...