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Mr. Tejkl's Chapter 15 Section 1
Atmosphere
8
Science
8th Grade
10/09/2014

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Term
ATMOSPHERE
Definition
is a mixture of gases that surrounds the Earth
Term
AIR PRESSURE
Definition
the measure of the force with which the air molecules push on a surface
Term
ALTITUDE
Definition
the height of an object above the Earth's surface
Term
TROPOSPHERE
Definition
this lies next to the earth's surface and is the lowest layer of the atmosphere
Term
STRATOSPHERE
Definition
the air in this layer is very thin and contains little moisture; it is about the troposhere
Term
OZONE
Definition
a molecule that is made up f 3 oxygen atoms and absorbs sunlight
Term
MESOSPHERE
Definition
this is the coldest layer of the atmosphere and is above the stratosphere
Term
THERMOSPHERE
Definition
this is the uppermost atmospheric layer and the temperature again increases with altitude
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