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Physical Science Rym
Physical Science Rymer 2012-2013
| Question | Answer |
|---|---|
| Atmosphere | the mass of air surrounding a planet |
| Atmospheric pressure | The pressure exerted by the atmosphere on all objects with in it |
| Barometer | an instrument used to measure atmospheric pressure |
| Homosphere | The lower layer of earths atmosphere, which exists from ground level to roughly 80 kilometers (50 miles) above sea level |
| Heterosphere | The upper layer of earths atmosphere, which exists higher than roughly 80 kilometers above sea level |
| Troposphere | The region of the atmosphere that extends from ground level to roughly 11 kilometers (7 miles) about 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 the atmosphere between altitudes of roughly 80 kilometers and 460 kilometers |
| Exosphere | The region of the atmosphere above an altitude of roughly 80 kilometers and 460 kilometers |
| Ionosphere | The region of the atmosphere between the altitudes of roughly 65 kilometers and 330 kilometers, where the gases are ionized |