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Mr. Vaughan Unit 4

Unit 4 - Earth's Atmosphere

TermDefinition
atmosphere a mixture of gases that surrounds a planet or moon
air pressure the measure of the force with which air molecules push on a surface
thermosphere the uppermost layer of the atmosphere, in which temperature increases as altitude increases
mesosphere the layer of the atmosphere between the stratosphere and the thermosphere and in which temperature decreases as altitude increases
stratosphere the layer of the atmosphere that is above the troposphere and in which temperature increases as altitude increases
troposphere the lowest layer of the atmosphere, in which temperature decreases at a constant rate as altitude increases
ozone layer a gas molecule that is made up of three oxygen atoms
greenhouse effect the warming of the surface and lower atmosphere of Earth that occurs when water vapor, carbon dioxide, and other gases absorb and reradiate thermal energy
temperature a measure of how hot (or cold) something is; specifically, a measure of the average kinetic energy of the particles in an object
thermal energy the kinetic energy of a substance's atoms
thermal expansion an increase in the size of a substance in response to an increase in the temperature of the substance
heat the energy transferred between objects that are at different temperatures
radiation the transfer of energy as electromagnetic waves
convection the movement of matter due to differences in density; the transfer of energy due to the movement of matter
conduction the transfer of energy as heat through a material
wind the movement of air caused by differences in air pressure
Coriolis effect the curving of a path of a moving object from an otherwise straight path due to Earth's rotation
global wind the movement of air over Earth's surface in patterns that are worldwide
jet stream a narrow band of strong winds that blow in the upper troposphere
local wind the movement of air over short distances; occurs in specific areas as a result of certain geographical features
Created by: dougteach65
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