Weather and Cloud Formation Quiz

When warm, moist, stable air flows upslope, it

• produces stratus type clouds.

• causes showers and thunderstorms.

• develops convective turbulence.

If an unstable air mass is forced upward, what type clouds can be expected?

• Stratus clouds with little vertical development.

• Stratus clouds with considerable associated turbulence.

• Clouds with considerable vertical development and associated turbulence.

What situation is most conducive to the formation of radiation fog?

• Warm, moist air over low, flatland areas on clear, calm nights.

• Moist, tropical air moving over cold, offshore water.

• The movement of cold air over much warmer water.

If the temperature/dewpoint spread is small and decreasing, and the temperature is 62°F, what type weather is most likely to develop?

• Freezing precipitation.

• Thunderstorms.

• Fog or low clouds.

In which situation is advection fog most likely to form?

• A warm, moist air mass on the windward side of mountains.

• An air mass moving inland from the coast in winter.

• A light breeze blowing colder air out to sea.

What types of fog depend upon wind to exist?

• Radiation fog and ice fog.

• Steam fog and ground fog.

• Advection fog and upslope fog.

Low-level turbulence can occur and icing can become hazardous in which type of fog?

• Rain-induced fog.

• Upslope fog.

• Steam fog.

The presence of ice pellets at the surface is evidence that there

• are thunderstorms in the area.

• has been cold frontal passage.

• is a temperature inversion with freezing rain at a higher altitude.

What are characteristics of a moist, unstable air mass?

• Cumuliform clouds and showery precipitation.

• Poor visibility and smooth air.

• Stratiform clouds and showery precipitation.

What are characteristics of unstable air?

• Turbulence and good surface visibility.

• Turbulence and poor surface visibility.

• Nimbostratus clouds and good surface