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Chapter 15 1-3

Vocabulary

TermDefinition
Atmosphere a mixture of gases that surrounds the Earth and protects us from the Sun's harmful Ultra-Violet waves
Air Pressure The measure of the force with which air molecules push on a surface
Troposphere Tropo means turn & change; the troposphere is the layer where gases turn and mix
Stratosphere Strato means layer; in the Stratosphere gases are in layers and do not mix very much
Mesosphere Meso means middle; the mesosphere is the middle and coldest layer
Thermosphere Thermo means heat; the Thermosphere is the warmest layer of the atmosphere
Ions Electically charged particles
Ionosphere The thermosphere where ions are
Auroras Ions traveling through the ionosphere
Radiation The transfer of energy through EM waves without touching
Thermal Conduction Transfer of thermal energy through a material
Convection the transfer of thermal energy by circulation of movement of a liquid or gas
Convection Currents Warm air rising and cooler air sinking is a circular movement called...
Global Warming an increase in average global temperatures
Greenhouse Effect The process by which gases in the atmosphere absorb thermal energy and radiate it back to Earth
Wind The movement of air caused by differences in air pressure
Coriolis Effect The apparent curving of the path of winds and ocean currents due to Earth's rotation
Global Winds Convection cells and Coriolis Effect produce...
Polar Easterlies Wind belts that extend from the poles to 60 degrees latitude in both hemispheres
Westerlies The wind belts found between 30 and 60 degrees latitude in both hemispheres
Trade Winds In both hemispheres the winds that blow from 30 degrees latitude almost to the Equator
Doldrums The trade winds of the northern and southern hemispheres meet in an area around the equator
Horse Latitudes At about 30 degrees North and South latitude sinking air creates an area of high pressure. The wind at this location are weak.
Jet Stream Narrow belts of high speed winds that blow in the upper troposphere & low stratosphere
Created by: Megan McGlathery