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Bair,Atmosphere Word Scramble

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Question/Vocab. word	Answer
weather	the condition of earth's atmosphere at a particular time and place
atmosphere	the envelope of gases that surrounds the planet
ozone	a form of oxygen that has three oxygen atoms in each molecule
water vapor	water in the form of a gas
density	the amount of mass in a given volume
pressure	the force pushing on an area or surface
air pressure	the result of the weight of a column of air pushing down on an area
barometer	an instrument that is used to measure air pressure
mercury barometer	a glass tube open at the bottom end and partially filled with mercury; measures air pressure
aneroid barometer	an airtight metal chamber sensitive to changes in air pressure
altitude	elevation; distance above sea level; the average of the surface of the oceans
list three factors affecting air pressure	temperature, altitude, water vapor content
troposphere	the layer of the atmosphere in which Earth's weather occurs
What is the rate at which temperature decreases in the troposphere?	drops 6.5 degrees celsius for every kilometer in altitude
stratosphere	second layer of atmosphere; contains the ozone layer
Describe the temperature change in the stratosphere	Temperature begins very cold (-60 c) but warms with increasing altitude due to the ozone layer
mesosphere	middle layer of the atmosphere
What is a main characteristic of the mesosphere	protects earth's surface from being hit by most meteoroids.
Define: Thermosphere	outermost layer; has no definate outer limit; thermo- means heat
Describe the Ionosphere	lower part of the thermosphere; engery from sun causes gas molucules to become electrically charge particles called ions; auroras occur; radio waves bounce here
Describe the Exosphere	Outer layer of thermosphere;