| |
argon"Noble gas, symbol Ar, of atomic mass 40, that composes 0.93% by volume of dry air. Argon is constantly produced in the earth's crust from the radioactive decay of 40K and is subsequently released into the atmosphere.
ARGON (A)
A colorless, odorless inert gas that is the third most abundant constituent of dry air, comprising 0.93% of the total.
ARID ...
946%, Argon (A) at 0.93%, and Carbon Dioxide (CO2) at 0.033%. One of the most important gases in meteorology is water vapor (H2O). AIR MASS An extensive body of air throughout which the horizontal temperature and moisture characteristics are similar.
Inert gas Any one of six gases, helium, neon, argon, krypton, xenon, and radon, all of whose shells of planetary electrons contain stable numbers of electrons such that the atoms are chemically inactive.
air - Mixture of gases forming the earth's atmosphere, consisting of nitrogen (~78 percent), oxygen (~21 percent), water vapor, and other trace gases such as carbon dioxide, helium, argon, ozone, or various pollutants.
93% argon, 0.038% carbon dioxide, trace amounts of other gases, and a variable amount (average around 1%) of water vapor. This mixture of gases is commonly known as air.
The principal gases that compose dry air are: Nitrogen (N2) 78.09%; Oxygen (O2) 20.946%; Argon (A) at 0.93%; and Carbon Dioxide (CO2) 0.033%. One other important constituents of air is water vapor (H2O) which varies from 0% to about 4%.
AIR - A mixture of gases that makes up most of the atmosphere around the earth. It is roughly 78% nitrogen, 21% oxygen, and 1% argon and other trace gases.
ALOFT - Above the ground in the atmosphere.
 See also: Earth, Atmosphere, Water, Air, Surface
|
