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Ch.15 The Atmosphere

Ch. 15 The Atmosphere

TermDefinition
Atmosphere A mixture of gases that surrounds a planet or moon.
Air pressure The measure of the force that air molecules put on a surface, greatest in the Troposphere.
Troposphere Lowest layer of the atmosphere; temperature decreases at a constant rate as altitude increases and contains 21% Oxygen.
Stratosphere Layer of the atmosphere above the troposphere where temperature increases as altitude increases and the ozone layer is located.
Mesosphere The layer of the atmosphere between the stratosphere and the thermosphere and in which temperature decreases as altitude increases - coldest layer.
Thermosphere The uppermost layer of the atmosphere, in which temperature increases as altitude increases - hottest layer.
Ionosphere An area between the Mesosphere and the Thermosphere where particles become electrically charged - Aurora's occur here.
Thermal Conduction The transfer of energy as heat through a material.
Convection The transfer of thermal energy by the circulation or movement of a liquid or gas.
Greenhouse effect The natural warming of Earth's atmosphere when carbon dioxide, and water vapor absorb and reradiate thermal energy.
Global Warming/Climate Change A gradual increase in average global temperatures brought on by too much carbon dioxide.
wind The movement of air caused by differences in air pressure.
Polar Easterlies Prevailing winds that blow from east to west between 60° and 90° latitude in both hemispheres.
Westerlies Prevailing winds that blow from west to east between 30° and 60° latitude in both hemispheres.
Trade Winds Prevailing winds that blow northeast from 30° North or 30° South to the equator.
Created by: cslavens
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