The process when water vapor turns into liquid water is called condensation. This transformation occurs when the air cools, allowing the water vapor to lose energy and change its state. Commonly observed in nature, condensation can be seen when dew forms on grass in the early morning, or when water droplets collect on a glass containing a cold drink. The temperature at which this change occurs is called the dew point. Condensation is a crucial part of the water cycle, playing a significant role in weather phenomena and precipitation formation.