Difference between revisions of "Rain"
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== Description == | == Description == | ||
| − | Liquid water that falls from the atmosphere to the earth. Temperatures below 0C cause the rain to become sleet or snow. When the liquid drops are suspended in the atmosphere as clouds, they may absorb components from the air such as [ | + | Liquid water that falls from the atmosphere to the earth. Temperatures below 0C cause the rain to become sleet or snow. When the liquid drops are suspended in the atmosphere as clouds, they may absorb components from the air such as [[carbon%20dioxide|carbon dioxide]] or pollutants. Carbon dioxide will form carbonic acid and decrease the pH of rain as low as 5.6. [[Acid%20rain|Acid rain]] occurs when pH levels are below this point due to the presence of other types of pollutants, such as [[sulfur%20dioxide|sulfur dioxide]]. |
== Synonyms and Related Terms == | == Synonyms and Related Terms == | ||
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precipitation; chuva (Port.) | precipitation; chuva (Port.) | ||
| − | == | + | ==Physical and Chemical Properties== |
Diameter of drops = greater than 0.5 mm (0.02 inch) but smaller than 4 mm | Diameter of drops = greater than 0.5 mm (0.02 inch) but smaller than 4 mm | ||
| − | == | + | ==Resources and Citations== |
* Random House, ''Webster's Encyclopedic Unabridged Dictionary of the English Language'', Grammercy Book, New York, 1997 | * Random House, ''Webster's Encyclopedic Unabridged Dictionary of the English Language'', Grammercy Book, New York, 1997 | ||
| − | * ''Encyclopedia Britannica'', http://www.britannica.com Comment: "rain." | + | * ''Encyclopedia Britannica'', http://www.britannica.com Comment: "rain." Accessed 2 June 2005 . |
[[Category:Materials database]] | [[Category:Materials database]] | ||
Latest revision as of 13:35, 9 September 2022
Description
Liquid water that falls from the atmosphere to the earth. Temperatures below 0C cause the rain to become sleet or snow. When the liquid drops are suspended in the atmosphere as clouds, they may absorb components from the air such as Carbon dioxide or pollutants. Carbon dioxide will form carbonic acid and decrease the pH of rain as low as 5.6. Acid rain occurs when pH levels are below this point due to the presence of other types of pollutants, such as Sulfur dioxide.
Synonyms and Related Terms
precipitation; chuva (Port.)
Physical and Chemical Properties
Diameter of drops = greater than 0.5 mm (0.02 inch) but smaller than 4 mm
Resources and Citations
- Random House, Webster's Encyclopedic Unabridged Dictionary of the English Language, Grammercy Book, New York, 1997
- Encyclopedia Britannica, http://www.britannica.com Comment: "rain." Accessed 2 June 2005 .