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pablo slette

on 24 May 2010

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Transcript of nerd

Earth's Atmosphere Vocab weather- is the condition of earth's atmosphere at a particular time and place. atmosphere- is the layer of gases that surround the earth. ozone-is a form of oxygen that has 3 oxygen atoms instead of the usual two. water vapor- is water in the form of a gas. pollutant- harmful substances in the air, water, or soil. photochemical smog- the brown haze that forms in cities. temperature inversion- a layer of warm air preventing the rising air from escaping. acid rain- rain that contains more acid than normal. density- the amount of mass in a given volume of air. pressure- the force pushing on an area or a surface. air pressure- the weight of a column of air pushing down on an area baromometer- used to measure changes in air pressure. mercury berometer- a glass tube open at the bottom and parcially filled with mercury aneroid berometer- an air type chamber trophosphere- lowest layer of the earth's atmosphere mesosphere-The middle layer of the earth's atmosphere thermoshpere-the outer layer of the earth's atmosphere ionnosphere- the lower layer of the thermosphere. aurora borealis- the northern lights
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