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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 the surround Earth. |
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Ozone |
A form of oxygen atoms 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 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, with it'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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Trophosphere |
The lowest layer of Earth's atmosphere. |
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Mesosphere |
The layer of Earth's atmosphere immediately above the stratosphere. |
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Ionosphere |
The lower part of the thermosphere. |
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Stratosphere |
The second-lowest layer of Earth's atmosphere. |
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Thermosphere |
The outermost layer of Earth's atmosphere.
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Exosphere |
The outer layer of the thermosphere. |
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Pollutants |
Harmful substances in the air, water, or oil. |
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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 usual. |
