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The Atmosphere
Apologia Physical Science Module 3 Vocabulary
Question | Answer |
---|---|
Atmosphere | The mass of air surrounding a planet |
Atmospheric pressure | The pressure exerted by the atmosphere on all objects within it |
Barometer | An instrument used to measure atmospheric pressure |
Homosphere | The lower layer of earth's atmosphere, which exists from ground level to roughly 80 kilometers (50 miles) above sea level |
Heterosphere | The upper layer of earth's atmosphere, which exists higher than roughly 80 kilometers (50 miles) above sea level |
Troposphere | The region of the atmosphere that extends from ground level to roughly 11 kilometers (7 miles) above sea level |
Stratosphere | The region of the atmosphere that spans altitudes of roughly 11 kilometers to 48 kilometers (30 miles) |
Mesophere | The region of the atmosphere that spans altitudes of roughly 48 kilometers to 80 kilometers (50 miles) |
Jet streams | Narrow bands of high speed winds that circle the earth, blowing from west to east |
Heat | Energy that is transferred as a consequence of temperature differences |
Temperature | A measure of the energy of random motion in a substance's molecules |
Thermosphere | The region of atmosphere between altitudes of roughly 80 kilometers and 460 kilometers |
Exosphere | The region of the atmosphere above an altitude of roughly 460 kilometers |
Ionosphere | The region of the atmosphere between the altitudes of roughly 64 kilometers and 330 kilometers, where the gases are ionized |