What Makes Clouds? (1965)

The film explains the formation of clouds, starting with the basic concept that clouds are made of water droplets. It discusses how fog occurs when clouds hug the ground and describes the process of water evaporation from the earth's surface. The video illustrates how air can hold water vapor and how temperature changes can lead to condensation, forming clouds. It also highlights the importance of tiny particles in the air that serve as surfaces for the water vapor to condense upon. The process of air rising, expanding, and cooling is crucial for cloud formation, and the film concludes by mentioning ongoing research into how rain is formed from cloud droplets. Keywords cloud formation, evaporation, condensation, water vapor, fog, temperature, air pressure, particles, rain LIMITED DISTRIBUTION.