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Weather CH 06
| Question | Answer |
|---|---|
| The greatest amount of latent heat is absorbed from the environment when | ice changes directly to vapor. |
| As an aircraft ascends within the troposphere, the external | None of the above is correct. |
| Clouds are ______ to develop if a radiosonde sounding indicates unstable air. | more likely |
| Air mass advection ______ change the relative humidity. | can |
| If the temperature of an unsaturated (clear) air parcel does not change while its mixing ratio increases, the density of the parcel ______. | decreases |
| A relatively warm surface tends to ______ the overlying air. | destabilize |
| As the temperature of a saturated (cloudy) air parcel falls, its relative humidity ______. | does not change |
| All of the following soundings (temperature profiles) always indicate stable atmospheric conditions with the exception of | a drop of temperature with altitude. |
| The saturation vapor pressure ______ with rising air temperature. | increases |
| ______, annual precipitation is greater than annual evapotranspiration. | On the continents |
| Sublimation is to deposition as evaporation is to ______. | condensation |
| If the mixing ratio of a parcel of air is 6 grams per kilogram and the relative humidity is 25 percent, the saturation mixing ratio is ______ grams per kilogram. | None of these is correct. |
| In an isothermal temperature profile, the air temperature | does not change with altitude. |
| Evaporation is to condensation as deposition is to ______. | sublimation |
| A lapse rate of ______ Celsius degrees per 1000 meters is stable for clear air and unstable for cloudy air. | 7 |
| If a saturated (cloudy) air parcel is heated (say by absorption of radiation), its relative humidity ______. | decreases |
| If the air temperature drops with altitude such that the actual lapse rate (sounding) is 7 Fahrenheit degrees per 1000 feet, the air layer is ______ for saturated (cloudy) air parcels and ______ for unsaturated (clear) air parcels. | unstable...............unstable |
| ______ air tends to suppress convection. | Stable |
| Cumulus clouds are more likely to form over | vegetated land surface in summer. |
| As a clear parcel of air ascends dry adiabatically, | All of the above are correct. |
| The maximum pressure that water vapor molecules could exert if the air were saturated is called the | saturation vapor pressure. |
| Conditional stability indicates that an air layer is | unstable for cloudy and stable for clear air parcels. |
| Two equal volumes of air at the same temperature and pressure have different amounts of water vapor in them. The air parcel with the higher relative humidity will | contain the same number of molecules as the other parcel. |