Evaporation
i-vap-uh-RAY-shun
/ɪˌvæpəˈreɪʃən/
The process by which a liquid changes into a gas or vapor, typically at a temperature below its boiling point.
It's a key part of the water cycle, where liquid water turns into water vapor and rises into the atmosphere.
The story behind the word. The word 'evaporation' comes from the Latin prefix 'e-', meaning 'out' or 'away from', combined with 'vapor', meaning 'steam' or 'mist'. So, it literally means 'to turn into vapor and go out'. This accurately describes how liquid water transforms into an invisible gas and disperses into the air.
Word relationships
- vaporization: A broader term, including boiling, while evaporation is specifically below boiling point.
- drying: Refers to the result of evaporation, not the process itself.
- condensation: The opposite process, where gas changes into liquid.
Commonly confused with
- Boiling: Boiling is a rapid vaporization at a specific temperature; evaporation is a slower process that can occur at any temperature below boiling.
Word family
- evaporate (verb): To turn from liquid into vapor.
- evaporative (adjective): Relating to or causing evaporation.
Collocations
- rate of evaporation
- solar evaporation
- evaporation pond
- evaporation losses
Example sentences
- "Evaporation from the oceans is the primary source of moisture in the Earth's atmosphere." Explaining the water cycle.
- "After the rain, the puddles on the sidewalk quickly disappeared due to evaporation in the warm sunlight." A simple observation.
Memory hook
Think of 'E-VAPOR-ATION' as 'EXITING' (E-) as 'VAPOR' from a liquid. Exit as vapor
When not to use
Do not confuse 'evaporation' with 'boiling', which is a specific type of vaporization that occurs at a fixed temperature.
Fun facts
- Evaporation is a cooling process because it removes heat energy from the liquid.
- Plants release water vapor into the atmosphere through a process called transpiration, which is a form of evaporation.
Related words
Explore more words
humidity, convection, reduction, distill, hydrology, effervescence
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