click below
click below
Normal Size Small Size show me how
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. |