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Weather Chapter 1

atmosphere a mixture of gases that surrounds a planet, such as Earth
air pressure the measure of the force with which air molecules push on a surface
altitude the height of an object above the Earth's surface
troposphere the owest layer of the atmosphere (means "change")
stratosphere the atmospheric layer above the tropsphere (means "layer")
ozone a gas molecule that is made up of three oxygen atoms and that absorbs ultraviolet radiation from the sun
mesosphere the coldest layer of the atmosphere (means "middle")
thermosphere the uppermost layer of he atmosphere (means "heat")
radiation the transfer of energy as electromagnetic waves, such as visible light or infrared waves
conduction ther transfer of thermal energy from one material to another by direct contact; conduction can also occur within a substance
convection 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 termperatures
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
weterlies wind belts found in both the Northern and Southern Hemispheres between 30 degrees and 60 degrees latitude
polar easterlie wind belts that extend from the poles to 60 degrees latitude in both hemispheres
jet streams narrow belts of high-speed winds tht blow in the upper troposphere and the lower stratosphere
Primary Pollutants pollutants that are put directly into the air by human or natural activity
secondary pollutants pollutants that form from chemical reactions that occur when primary pollutants come in contact with other primary pollutants or with naturally occurring substances, such as water vapor
acid precipitation precipitation that contains acids due to air pollution.
Created by: MrsDalling