Evaporation - Revision history

Jmdonev: 1 revision imported

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Energy>Jmdonev at 22:32, 21 May 2026

2026-05-21T22:32:02Z

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	~~[[Category: Done 2015-09-06]]~~		<onlyinclude>'''Evaporation''' is a [[phase change]] of a [[liquid]] to a [[gas]]eous state.</onlyinclude> It occurs when [[molecule]]s in the liquid have enough [[kinetic energy]] to escape the surface of the liquid - it is therefore a surface phenomena, and is not to be confused with the [[volume]] phenomena of [[boiling point\|boiling]].<ref>Hyperphysics, ''Evaporation'' [Online], Available: http://hyperphysics.phy-astr.gsu.edu/hbase/kinetic/vappre.html#c2</ref>
	<onlyinclude>'''Evaporation''' is a [[phase change]] of a [[liquid]] to a [[gas]]eous state.</onlyinclude> It occurs when [[molecule]]s in the liquid have enough [[kinetic energy]] to escape the surface of the liquid - ~~therefore~~ it is a surface phenomena, not to be confused with the [[volume]] phenomena of [[boiling point\|boiling]].<ref>Hyperphysics, ''Evaporation'' [Online], Available: http://hyperphysics.phy-astr.gsu.edu/hbase/kinetic/vappre.html#c2</ref> Evaporation is a cooling mechanism ~~because~~ the escaping [[molecule]]s require [[heat]] from the rest of the liquid, thereby leaving the remaining liquid cooler. This is used by the human body in the process of perspiration in order to cool ~~people down which~~ can be read about on [http://hyperphysics.phy-astr.gsu.edu/hbase/thermo/sweat.html#c1 Hyperphysics].
			Evaporation is a cooling mechanism as the escaping [[molecule]]s require [[heat]] from the rest of the liquid in order to change phase, thereby leaving the remaining liquid cooler. This mechanism is used by the human body in the process of perspiration (sweating) in order to cool off and can be read about on [http://hyperphysics.phy-astr.gsu.edu/hbase/thermo/sweat.html#c1 Hyperphysics].

			Liquids with strong intermolecular attractive forces require more energy for evaporation to occur. Since water molecules have an asymmetric electric charge, they naturally form weak electrostatic bonds with one another known as [[Van der Waals]] bonds.<ref>Hyperphysics. ''van der Waals bonding''[Online]. Accessible: http://hyperphysics.phy-astr.gsu.edu/hbase/Chemical/waal.html</ref> These bonds mean that the amount of heat needed to evaporate water is quite significant when compared to other liquids that lack these bonds, with one gram of water requiring almost 2300 joules of energy to evaporate. This energy needed to evaporate a liquid is known as the [[latent heat]] of evaporation.<ref> LibreTexts. ''Heat of Vapourization'' [Online]. Accessible: https://chem.libretexts.org/Bookshelves/Physical_and_Theoretical_Chemistry_Textbook_Maps/Supplemental_Modules_(Physical_and_Theoretical_Chemistry)/Thermodynamics/Energies_and_Potentials/Enthalpy/Heat_of_Vaporization</ref>

			[[File:Fog-hd-steam-buildings-treeslake-shore-ice-landscapes-cabin-houses-trees-lake-images-sky-forest-bw-snow-winter-natural-high-definition-jpg.jpg\|thumb\|Evaporative fog above a lake in winter. This fog is the result of evaporation of water from the lake's surface, which then condenses back into liquid water when it meets the cold air.<ref>Cengiz, H. [Online]. Accessible: https://thewallpaper.co/fog-hd-steam-buildings-treeslake-shore-ice-landscapes-cabin-houses-trees-lake-images-sky-forest-bw-snow-winter-natural-high-definition-jpg/</ref>]]
			In water sciences, evaporation is commonly lumped-in with the process of [[transpiration]], the act of plants exchanging water vapour with the atmosphere through their stomata, and the two processes combined are known as [[evapotranspiration]]. While it is not possible in all situations to separate out the evaporative and the transpirative signal in real-world measurements, it is often more useful to deal with the combined evapotranspirative signal when trying to understand parts of the [[hydrologic cycle]] for water-policy decision making. This is expected to be of particular importance in the face of climate change, as hotter temperatures will result in a greater amount of evaporation worldwide.<ref name = yale>Dennehy, K. ''Climate Change Will Boost Global Lake
			Evaporation—with ‘Extreme’ Consequences'' Yale School of the Environment. [Online]. Accessible: https://environment.yale.edu/news/article/climate-change-will-increase-global-lake-evaporation-with-extreme-consequences/</ref>

	[http://hyperphysics.phy-astr.gsu.edu/hbase/kinetic/vappre.html#c2 Click here] to learn more about how evaporation works!		[http://hyperphysics.phy-astr.gsu.edu/hbase/kinetic/vappre.html#c2 Click here] to learn more about how evaporation works!

			== For Further Reading ==

			* [[Phase change]]
			* [[Boiling point]]
			* [[Transpiration]]
			* [[Hydrologic cycle]]
			* Or explore a [[Special:Random\|random page]]

	==References==		==References==
	{{reflist}}		{{reflist}}
	[[Category:Uploaded]]		[[Category:Uploaded]]
			[[Category:Done 2026-06-01]]

J.williams: 1 revision imported

2015-09-18T16:51:02Z

1 revision imported

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Kjstenho at 20:05, 3 September 2015

2015-09-03T20:05:15Z

← Older revision		Revision as of 20:05, 3 September 2015
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	[[Category:Done 2015-06~~-11~~]]		[[Category: Done 2015-09-06]]
	<onlyinclude>'''Evaporation''' is a [[phase change]] of a [[liquid]] to a [[gas]]eous state.</onlyinclude> It occurs when [[molecule]]s in the liquid have enough [[kinetic energy]] to escape the surface of the liquid - therefore it is a surface phenomena, not to be confused with the volume phenomena of [[boiling point\|boiling]].<ref>Hyperphysics, ''Evaporation'' [Online], Available: http://hyperphysics.phy-astr.gsu.edu/hbase/kinetic/vappre.html#c2</ref> Evaporation is a cooling mechanism because the escaping [[molecule]]s require [[heat]] from the rest of the liquid, thereby leaving the remaining liquid cooler. This is used by the human body in the process of perspiration in order to cool people down which can be read about on [http://hyperphysics.phy-astr.gsu.edu/hbase/thermo/sweat.html#c1 Hyperphysics].		<onlyinclude>'''Evaporation''' is a [[phase change]] of a [[liquid]] to a [[gas]]eous state.</onlyinclude> It occurs when [[molecule]]s in the liquid have enough [[kinetic energy]] to escape the surface of the liquid - therefore it is a surface phenomena, not to be confused with the [[volume]] phenomena of [[boiling point\|boiling]].<ref>Hyperphysics, ''Evaporation'' [Online], Available: http://hyperphysics.phy-astr.gsu.edu/hbase/kinetic/vappre.html#c2</ref> Evaporation is a cooling mechanism because the escaping [[molecule]]s require [[heat]] from the rest of the liquid, thereby leaving the remaining liquid cooler. This is used by the human body in the process of perspiration in order to cool people down which can be read about on [http://hyperphysics.phy-astr.gsu.edu/hbase/thermo/sweat.html#c1 Hyperphysics].

	[http://hyperphysics.phy-astr.gsu.edu/hbase/kinetic/vappre.html#c2 Click here] to learn more about how evaporation works!		[http://hyperphysics.phy-astr.gsu.edu/hbase/kinetic/vappre.html#c2 Click here] to learn more about how evaporation works!

J.williams: 1 revision imported

2015-08-26T21:30:43Z

1 revision imported

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J.williams at 22:46, 11 August 2015

2015-08-11T22:46:14Z

New page

[[Category:Done 2015-06-11]]
<onlyinclude>'''Evaporation''' is a [[phase change]] of a [[liquid]] to a [[gas]]eous state.</onlyinclude> It occurs when [[molecule]]s in the liquid have enough [[kinetic energy]] to escape the surface of the liquid - therefore it is a surface phenomena, not to be confused with the volume phenomena of [[boiling point|boiling]].<ref>Hyperphysics, ''Evaporation'' [Online], Available: http://hyperphysics.phy-astr.gsu.edu/hbase/kinetic/vappre.html#c2</ref> Evaporation is a cooling mechanism because the escaping [[molecule]]s require [[heat]] from the rest of the liquid, thereby leaving the remaining liquid cooler. This is used by the human body in the process of perspiration in order to cool people down which can be read about on [http://hyperphysics.phy-astr.gsu.edu/hbase/thermo/sweat.html#c1 Hyperphysics].

[http://hyperphysics.phy-astr.gsu.edu/hbase/kinetic/vappre.html#c2 Click here] to learn more about how evaporation works!

==References==
{{reflist}}
[[Category:Uploaded]]