Meteorology: Lesson 14/15 Pre-Quiz

If there is thunderstorm activity in the vicinity of an airport at which you plan to land, which hazardous atmospheric phenomenon might be expected on the landing approach?

• Precipitation Static.

• Steady rain.

• Wind-shear turbulence.

What feature is normally associated with the cumulus stage of a thunderstorm?

• Roll cloud.

• Frequent lightning.

• Continuous updrafts.

• Virga.

A nonfrontal, narrow band of active thunderstorms that often develop ahead of a cold front is known as a

• Squall line.

• Prefrontal system.

• Dry line.

• Supercell.

What determines the stability of an air parcel when it is lifted upward in the atmosphere?

• The altitude at which the parcel starts.

• The temperature of the parcel compared to the surrounding air.

• The speed at which the parcel is lifted.

• The pressure at the surface.

Which of the following describes absolute stability in a column of air?

• The lapse rate of temperature is equal to the dry adiabatic lapse rate.

• The lapse rate of temperature is less than the moist adiabatic lapse rate.

• The lapse rate of temperature is greater than the dry adiabatic lapse rate.

• The lapse rate of temperature is between the dry and moist adiabatic lapse rate.

What is conditional stability in a column of air?

• A condition where the air parcel always has the same temperature as the surrounding air.

• A condition where the lapse rate of temperature is greater than the dry adiabatic lapse rate.

• A condition where the lapse rate of temperature is less than the dry adiabatic lapse rate but greater than the moist adiabatic lapse rate.

• A condition where the air parcel is always colder than the surround air.

What does the acronum RADAR stand for?

• Radio Detection and Ranging.

• Radio Detection and Reflection.

• Radio Analysis and Ranging.

• Radio Application and Ranging.

What is the wavelength of the radar used by the Weather Surveillance Radar - 1988 Doppler (WSR-88D)?

• 3 cm.

• 5 cm.

• 7 cm.

• 10 cm.

Which type of precipitation requires a deep layer aloft with above-freezing temperatures and a shallow layer of below-freezing air at the surface?

• Snow.

• Ice Pellets.

• Freezing Rain.

• Hail.

What happens to snowflakes as they fall into a shallow warm layer aloft and then reenter a layer of below-freezing air at the surface?

• The evaporate completely before reaching the ground.

• They melt completely and fall as rain.

• They partially melt and refreeze into ice pellets.

• They remain as snowflakes and accumulate on the ground.