The phenomenon where water vapor turns into liquid water is known as condensation. This process occurs when water vapor cools down and loses energy, transitioning from a gaseous state back to a liquid state. Condensation is commonly observed on cold surfaces, such as dew forming on grass in the morning or water droplets appearing on the outside of a cold beverage. This process is vital in the water cycle, as it contributes to cloud formation and precipitation. Factors such as temperature, humidity, and pressure play essential roles in influencing the rate and extent of condensation.