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is a mixture of gases that surrounds the Earth

air pressure

is the mearsure of the force with which the air molecules push on a surface


is the height of an object about the Earth's surface


is the lowest layer of the atmosphere; it is also the densest atmospheric layer


is the atmospheric layer above the troposhere, the air is very thing and contains little moisture, it is also extreamly cold


is a gas molecule that is made up of three oxygen atoms and that absorbs ultraviolet radiation from the sun


literally means the "middle sphere" the strong, lower part of the matle between the athernosphere and the outer core, and the coldes layer of the atmosphere


the uppermost layer of the atmosphere


is the transfer of energy as electromagnetic waves


is the transfer of thermal energy from one material to another by direct contact


is the transfer of thermal energy by the circulation or movement of a liquid or gas

greenhouse effect

the natural heating process of a planet, such as the Earth, by which gases in the atmosphere trap thermal energy

global warming

a rise in average global temperatures


moving air

Coriolis effect

the curving of moving objects from a straight path due to the Earth's rotation

trade winds

the winds that blow from 30 degrees latitude to the equator


wind belts found in both the Northeren and Southern Hemispheres between 30 degrees and 60 degrees latitude

polar easterlies

wind belts that extend from the poles to 60 degrees latitude in both hemispheres

jet streams

narrow belts of high-speed winds that blow in the upper troposphere and the lower stratosphere

primary pollutants

are pollutants that are put directly into the air by human or natural activity

secondary pollutants

are pollutants that form from chemical reactions that occur when primary pollutants come in contact with other primary pollutants or with natrually occuring substances such as water vapor

acid precipitation

is precipitaiton that contains acids from air pollution

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