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10 Cards in this Set
- Front
- Back
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Atmosphere
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the envelope of gases surrounding the earth or another planet. |
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Troposphere
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the lowest region of the atmosphere, extending from the earth's surface to a height of about 3.7–6.2 miles (6–10 km), which is the lower boundary of the stratosphere. |
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Stratosphere |
the layer of the earth's atmosphere above the troposphere, extending to about 32 miles (50 km) above the earth's surface (the lower boundary of the mesosphere). |
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Mesosphere
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the region of the earth's atmosphere above the stratosphere and below the thermosphere, between about 30 and 50 miles (50 and 80 km) in altitude. |
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Thermosphere |
the region of the atmosphere above the mesosphere and below the height at which the atmosphere ceases to have the properties of a continuous medium. The thermosphere is characterized throughout by an increase in temperature with height.
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Tropopause
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the interface between the troposphere and the stratosphere. |
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Stratopause |
the interface between the stratosphere and the ionosphere. |
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Mesopause |
the boundary in the earth's atmosphere between the mesosphere and the thermosphere, at which the temperature stops decreasing with increasing height and begins to increase. |
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Altitude |
the height of an object or point in relation to sea level or ground level |
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Air Pressure |
The definition of air pressure is the force exerted onto a surface by the weight of the air. An example of air pressure is the average sea-levelair pressure of 101.325 kPA. |
