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science module 3
N/A
15
Science
8th Grade
09/28/2009
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Term
Define atmosphere.
 Definition
The mass of air surrounding a planet.
Term
Define atmospheric pressure.
 Definition
The pressure exerted by the atmosphere on all objects within it.
Term
Define barometer.
 Definition
An instrument used to measure atmospheric pressure.
Term
Is ozone depletion causing global warming.
 Definition
no
Term
Define homosphere.
 Definition
The lower layer of earths atmosphere, which exists from ground level to fifty miles above sea level.
Term
Define heterosphere.
 Definition
The upper layer of earth's atmosphere, which exists higher than fifty miles above sea level.
Term
Define troposphere.
 Definition
The region of the atmosphere the extends from ground level to 11 kilometers.
Term
Define stratosphere.
 Definition
The region of the atmosphere the extends from 11 km to 48 km.
Term
Define mesosphere.
 Definition
The region of the atmosphere the extends from 48 km to 80 km.
Term
Define jet streams.
 Definition
Narrow bands of high speed winds that cicle the earth, blowing from west to east.
Term
Define heat.
 Definition
Energy that is being transferred.
Term
Define temperature.
 Definition
A measure of the energy of motion in a substance's molecules.
Term
Define Thermosphere.
 Definition
The region of the atmosphere between altitudes of 80 km and 460 km.
Term
Define exosphere.
 Definition
The region of the atmosphere above 460 km.
Term
Define ionosphere.
 Definition
The region of the atmosphere between 65 km and 330 km where the gasses are ionized
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