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Earth Science ch 15

STUDY
PLAY
atmosphere
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
altitude
is the height of an object about the Earth's surface
troposphere
is the lowest layer of the atmosphere; it is also the densest atmospheric layer
stratosphere
is the atmospheric layer above the troposhere, the air is very thing and contains little moisture, it is also extreamly cold
ozone
is a gas molecule that is made up of three oxygen atoms and that absorbs ultraviolet radiation from the sun
mesosphere
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
thermosphere
the uppermost layer of the atmosphere
radiation
is the transfer of energy as electromagnetic waves
conduction
is the transfer of thermal energy from one material to another by direct contact
convection
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
wind
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
westerlies
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