This photo shows water drops that have condensed on blades of grass.
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Image Courtesy of Taro Taylor, Creative Commons Attribution 2.0 License
Condensation is when water changes its state from a vapor or gas to a liquid. Condensation is responsible for the formation of clouds. Common examples of condensation are: dew forming on grass in the early morning, eye glasses fogging up when you enter a warm building on a cold winter day, or water drops forming on a glass holding a cold drink on a hot summer day.
Condensation occurs when water droplets form due to cooling air. When warm air cools, water leaves the vapor in the warm water and condenses into liquid.
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