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14 Cards in this Set
- Front
- Back
atmosphere
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the mass of air surrounding a planet
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atmospheric pressure
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the pressure exerted by the atmosphere on all objects within it
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homosphere
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the lower layer of earth's atmosphere, which exists from ground level to roughly 80 kilometers (50 miles) above sea level
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heterosphere
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the upper layer of earth's atmosphere, which exists higher than 80 kilometers (50 miles) above sea level
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troposphere
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the region of the atmosphere that extends from ground level to roughly 11 kilomethers (7 miles)above sea level
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stratosphere
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the region of the atmosphere that spans altitudes of 11 kilometers to 48 kilometers (30 miles)
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mesosphere
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the region of the atmosphere that spans altitudes of 48 kilometers to 80 kilometers (50 miles)
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jet streams
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narrow bands of high-speed winds that circle the earth, blowing from west to east
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heat
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energy that is being transferred
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temperature
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a measure of the energy of motion in a substance's molecules
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thermosphere
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the region of the atmosphere between altitudes of 80 kilometers and 460 kilometers
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exosphere
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the region of the atmosphere above an altitude of 460 kilometers
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ionosphere
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the region of the atmosphere between the altitudes of 65 kilometers and 330 kilometers where the gases are ionized
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barometer
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an instrument used to measure atmospheric pressure
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