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Chapter 7

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This activity contains 15 questions.

	A lapse rate is a change of ___________ with height.   relative humidity pressure memory wind speed temperature

	Suppose an air mass warms as it moves over a land surface, but no water vapor is added or lost. The relative humidity will ___________ while the specific humidty will ____________.   not change/not change fall/not change fall/rise not change/fall rise/not change

	The Peru Current is a cold ocean current off the west coast of South America. If a warm, moist air mass passed over this current, ____________ might result.   thunderstorms sublimation adiabatic cooling advection fog radiation fog

	____________ is most likely when the environmental lapse rate is large (for example, 12 Celsius degrees/1000m).   Radiation fog Armageddon Supression of condensation Atmospheric instability Advection fog

	Descending air always warms at the _____________.   environmental lapse rate speed of sound dry adiabatic lapse rate moist adiabatic lapse rate it can't be known

	The ____________ is the ratio of the actual amount of water vapor in the atmosphere to the maximum amount of water possible at that temperature.   relative dew point relative humidity absolute humidity specific humidity dew point

	Air that returns to its original position after an initial vertical displacement is called __________.   unstable adiabatic diabatic neutral stable

	A(n) _________ is an aggregation of tiny moisture droplets and ice crystals suspended in the air.   cloud Bergeron cyclone snow evaporation

	Clouds are usually classified on the basis of __________ and __________.   wetness and source region altitude/temperature altitude/process of formation altitude/shape size/shape

	Clouds that are flat and layered are in the general group called __________.   cumulus cumuliform stratiform cirroform

	The __________ process is the predominant cloud-forming process in the tropics, where clouds form above freezing temperatures.   Bergeron ice-crystal collision-coalescence stratiform cumulonimbus Rapp humidity

	The foggiest region of the United States is the ___________.   Great Lakes region Atlantic northeast Pacific northwest Southeast Rocky Mountains

	In unstable conditions, a parcel of air will __________ than the surrounding air.   rise because it is colder fall because it is warmer rise because it is warmer fall because it is colder

	Assume a parcel of air at sea level (0 meters) has a temperature of 30 degrees Celsius. Further, assume that this parcel is forced upward to 2000 meters elevation, where the surrounding air temperature is 6 degrees Celsius. These conditions would be described as __________________. (Note: There are no clouds present in this scenario.)   stable, because the parcel is cooler than the surrounding air unstable, because the parcel is cooler than the surrounding air stable, because the parcel is warmer than the surrounding air unstable, because the parcel is warmer than the surrounding air

	Assume that a parcel of air has an actual specific humidity of 8 g/kg and a relative humidity of 50%. This same parcel of air, then, would be able to hold ________ if it were completely saturated.   4 g/kg 16 g/kg 12 g/kg 8 g/kg 2 g/kg

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