Menu. Learn more. Evaporation is a process by which a substance changes from a liquid state to a gaseous state at temperatures below the boiling point of the liquid. Dictionary ! Evaporation occurs when liquid water on Earth’s surface turns into water vapor in our atmosphere. Evaporation, the process by which an element or compound transitions from its liquid state to its gaseous state below the temperature at which it boils; in particular, the process by which liquid water enters the atmosphere as water vapour. Evaporation is defined as the process of a liquid changing into a gas. When you have a puddle of water (H 2 O) on a windy day, the wind can cause an increased rate of evaporation even when it is cold out. Diagram of water changing to vapor and rising upward. This site uses cookies and by continuing to browse it you are agreeing to our use of cookies. ĭ-văp'ə-rā'shən . Dictionary Definitions; Evaporation Evaporation meaning. Make it an experiment! Sublimation is the process by which a solid transforms into a gas without passing through the liquid stage. Filters Evaporation is defined as the process of a liquid changing into a gas. Evaporation is when a liquid becomes a gas without forming bubbles inside the liquid volume.If bubbles are formed we are talking instead about "boiling".For example, water left in a bowl will slowly disappear. Evaporation drives the water cycle. Water (a liquid) turns into vapor (a gas) when heat energy is applied to raise its temperature to 100°C (212°F). Water in the liquid state is a compound, and the heat breaks up the bonds into water molecules, which is gaseous. Many factors affect evaporation, but the main driving force is solar energy from the sun. At normal atmospheric pressure, only some compounds like 'dry ice' (solid carbon dioxide) can go through this process.Most objects need low pressure in their surroundings to go through sublimation. Improve your knowledge on what evaporation is and learn more with DK Find Out. Evaporation from the oceans is the primary mechanism supporting the surface-to-atmosphere portion of the water cycle. Not all of the molecules in a liquid have the same energy. In nature, evaporation—especially from the oceans—plays a key role in the water cycle by moving water from its liquid state on Earth’s surface to the atmosphere as water vapor. Evaporation, mostly from the sea and from vegetation, replenishes the humidity of the air. Evaporation is simply the process by which liquid turns into a gas. Information about evaporation from the DK Find Out website for kids. After all, the large surface area of the oceans (over 70 percent of the Earth's surface is covered by the oceans) provides the opportunity for large-scale evaporation to occur. Evaporation happens when atoms or molecules escape from the liquid and turn into a vapor. Warm water vapor rises up through Earth’s atmosphere. 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