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Science Module 3
Exploring Creation with Physical Science
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 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 11 kilometers to 48 kilometers (30 miles). |
Mesosphere | The region of the atmosphere that spans altitudes of 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. |
Temperature gradient | Term often used to describe the steady drop in temperature (in the Troposphere) as altitude increases. |
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 460 kilometers. |
Ionosphere | The region of the atmosphere between the altitudes of roughly 65 kilometers and 330 kilometers where the gases are ionized. |