What is the process by which water vapor turns into liquid called?

The process by which water vapor turns into liquid is known as condensation. This occurs when water vapor in the air cools down and loses energy, resulting in the transformation of the vapor into tiny droplets of liquid water. This process is essential in the water cycle and is observed in everyday situations, such as when dew forms on grass in the early morning or when water droplets appear on a cold glass of water.

Evaporation refers specifically to the conversion of liquid water into water vapor, while sublimation involves the transition from solid ice directly to water vapor without becoming liquid first. Transpiration, on the other hand, involves the release of water vapor from plants into the atmosphere. Thus, condensation is the accurate answer for the transformation of water vapor back into its liquid form.