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Definition
| rain that contains more acid than normal |
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| force that is the result of the weight of a column of air pushing down an area |
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| elevation above sea level |
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| an instrument that measures changes in air pressure without using liquid |
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Definition
| the layer of gases that surrounds earth |
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| a colorful glowing display in the sky caused when particles from the sun strike oxygen and nitrogen atoms in the ionosphere |
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Definition
| an instrument used to measure changes in air pressure |
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| the amount of mass of a substance to a given volume |
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| the outer layer of the thermosphere, extending outward onto space |
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Definition
| the lower part of the thermosphere, where electrically charged particles called ions are found |
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Definition
| an instrument that measures changes in air pressure, consisting of a glass tube partially filled with mercury, with its opened end resting on a dish of mercury |
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| the middle layer of earths' atmosphere; the layer in which most meteoroids burn up |
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| form of oxygen that has three oxygen atoms in each molecules instead of two |
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| a brownish haze that is a mixture of ozone and other chemicals, formed when nitrogen oxides, hydrocarbons, and other pollutants react with each other in the presence of sunlight |
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| harmful substances in the air, water or soil |
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Definition
| the force pushing on the area or surface |
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Definition
| the second-lowest layer of the earth's atmosphere; the ozone layer is located in this layer |
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Definition
| the outermost layer of the earth's atmosphere |
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Definition
| the lowest layer of the earth's atmosphere |
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| the condition of earth's atmosphere at a particular time and place |
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