The process by which water vapor turns to liquid water is called condensation. This phase change occurs when water vapor cools and loses energy, resulting in the formation of tiny water droplets. Condensation is a crucial part of the water cycle and is responsible for phenomena such as dew, fog, and clouds. As moisture in the atmosphere condenses, it contributes to precipitation when the droplets combine and become heavy enough to fall. Understanding this process is essential in meteorology and for predicting weather patterns.