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24 Cards in this Set

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The pressure exerted by the weight of the atmosphere at a given altitude.
Atmospheric Pressure
The region of Earth's atmosphere that extends from sea level up to about 10 km
Troposphere
The region of Earth's atmosphere that extends from the troposphere to an altitude of about 50 km
Stratosphere
The stratospheric layer of gaseous ozone (O3) that protects life on Earth by filtering out most of the harmful ultraviolet radiation emitted by the sun.
Ozone Layer
1 part out of every million parts (1 ppm)
Parts per million
1 part out of every billion parts (1ppb)
Parts per billion
Conversion of atmospheric nitrogen into soluble nitrogen compounds available as plant nutrients.
Nitrogen fixation
The gases of periodic table group 8A; helium, neon, argon, krypton, xenon, and radon; long and thought to be completely unreactive. They are colorless and exist as single atoms at room temperature.
Noble Gases
Pollution that is attributable to human activity.
Anthropogenic pollution
Hydrocarbons
Compounds that contain only carbon and hydrogen atoms, such as methane (CH4)
An atom or group of atoms that is positively (a cation) or negatively (an anion) charged
Ion
Solid particles and liquid droplets suspended int he atmosphere
Particulates
Tiny pollutant particles, so small that they remain suspended int eh atmosphere for long periods.
Aerosols
An atmospheric condition in which warmer air is on top of cooler air
Thermal inversion
Smog generally caused by industrial activity such as coal burning; also known as London smog.
Industrial smog
Smog formed by the action of sunlight on photoreactive pollutants in the air.
Photochemical smog
Pollutants formed by chemical reactions in the atmosphere
Secondary Pollutants
Pollutants emitted directly into the atmosphere
Primary pollutants
Decomposition of a reactant, casued by the energy of light
Photodissociation
A species that has one or more unpaired electrons
Free Radical
Different molecular forms fo the same element; ni this case the two molecular forms are diatomic O2 and triatomic O3.
Allotropes
Combustion in which there is insufficient oxygen for complete combustion
Incomplete combustion
The rapid combination of a fuel with oxygen the process of burning
Combustion
Warming of the Earth above a level that is desirable from a human viewpoint as a result of increased concentrations of one or more greenhouse gases.
Global Warming