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chapter 15
Earth's Atmosphere
Term | Definition |
---|---|
ozone | a form of oxygen that has three oxygen atoms in each molecule instead of two |
weather | the condition of Earth's atmosphere at a particular time and place |
air pressure | the result of the weight of a column of air pushing down on an area |
barometer | an instrument that is used to measure air pressure |
altitude | (elevation) the distance above sea level |
trophosphere | the layer of the atmosphere in which Earth's weather occurs |
stratosphere | the layer of the atmosphere that contains the ozone layer |
mesosphere | the layer of the atmosphere that protects Earth's surface from being hit by most meteoroids |
thermosphere | the layer of the atmosphere that extends outward into space |
pollutants | harmful substances in the air, water or soil |