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20 Cards in this Set
- Front
- Back
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Weather |
The condition of Earth's atmosphere at a particular time and place. |
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atmosphere |
The envelope of gases that surrounds Earth. |
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ozone |
A form of oxygen that has three oxygen admas in each molecule instead of the usual two. |
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Water vapor |
Water in the form of a gas. |
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density |
the amount of mass in a substance in a given volume |
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pressure |
The amount of force pushing on an area |
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air pressure |
The pressure caused by the weight of a column of air pushing down on an area |
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barometer |
An instrument used to measure changes in air pressure |
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mercury barometer |
An instrument that measures changes in air pressure, consisting of a glass tube partially filled with mercury, withit's open end resting in a dish of mercury. |
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aneroid barometer |
An instrument that measures changes in air pressure without using a liquid |
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altitude |
Elevation above sea level |
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troposphere |
The area near the equator, between about 23.5 degrees south latitude |
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stratosphere |
The second-lowest layer of Earth's atmosphere |
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mesosphere |
The layer of Earth's atmosphere immediately above stratosphere |
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thermosphere |
The outermost layer of Earth's atmosphere |
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ionosphere |
The lower part of the thermosphere |
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exosphere |
The outer layer of the thermosphere |
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pollutant |
Harmful substances in air, water, or soil |
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photochemical smog |
A brownish haze that is a mixture of ozone and other chemicals, formed when pollutants react with each other in the presence of sunlight |
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acid rain |
Rain that contains more acid than normal |
