Meteorology Austrocontrol PPL #4

What factors may indicate a tendency to fog formation?. Low spread, decreasing temperature. Low spread, increasing temperature. Low pressure, increasing temperature. Strong winds, decreasing temperature.

What condition may prevent the formation of "radiation fog"?. Overcast cloud cover. Clear night, no clouds. Calm wind. Low spread.

What process results in the formation of "advection fog"?. Warm, moist air is moved across cold ground areas. Cold, moist air is being moved across warm ground areas. Cold, moist air mixes with warm, moist air. Prolonged radiation during nights clear of clouds.

What process results in the formation of "orographic fog" ("hill fog")?. Warm, moist air is moved across a hill or a mountain range. Cold, moist air mixes with warm, moist air. Prolonged radiation during nights clear of clouds. Evaporation from warm, moist ground area into very cold air.

What factors are required for the formation of precipitation in clouds?. Freezing temperatures, moderate to strong updrafts. High humidity and high temperatures. The presence of an inversion layer. Calm winds and intensive sunlight insolation.

The formation of medium to large precipitation particles requires... strong updrafts. strong wind. a high cloud base. an inversion layer.

What conditions may be expected when flying through Cumulonimbus clouds (Cb)?. Heavy rain, hail, heavy turbulence, heavy icing. Visibility more than 1.5 km, no turbulence, no icing. Medium precipitation, medium turbulence, icing. Low precipitation, calm air, light turbulence.

What conditions may be expected when flying through stratiform clouds (St)?. Medium precipitation, medium turbulence, icing. Low precipitation, calm air, light turbulence. Visibility more than 1.5 km, no turbulence, no icing. heavy rain, hail, heavy turbulence, heavy icing.

Which type of cloud is associated with prolonged rain?. Nimbostratus. Cirrostratus. Cumulonimbus. Altocumulus.

Regarding the type of cloud, precipitation is classified as... rain and showers of rain. light and heavy precipitation. showers of snow and rain. prolonged rain and continuous rain.

How is an air mass described when moving to Central Europe via the Russian continent during winter?. Continental polar air. Continental tropical air. Maritime polar air. Maritime tropical air.

The character of a continental air mass can change by moving across widespread... humid areas. desert areas. hot areas. snow-covered areas.

The character of an air mass is given by what properties?. Region of origin and track during movement. Temperatures at origin and present region. Environmental lapse rate at origin. Wind speed and tropopause height.

The front shown in the picture is a / an... cold front. front aloft. warm front. occlusion.

The front shown in the picture is a / an... warm front. front aloft. occlusion. cold front.

The front shown in the picture is a / an... occlusion. cold front. warm front. front aloft.

What cloud sequence can typically be observed during the passage of a warm front?. Cirrus, thickening altostratus and altocumulus clouds, lowering cloud base with rain, nimbostratus. Squall line with showers of rain and thunderstorms (Cb), gusting wind followed by cumulus clouds with isolated showers of rain. In coastal areas during daytime wind from the coast and forming of cumulus clouds, dissipation of clouds during evening and night. Wind becoming calm, dissipation of clouds and warming during summer; formation of extended high fog layers during winter.

What visual flight conditions can be expected near a cold front?. Moderate visibility, heavy showers and thunderstorms. Moderate to good visibility, scattered clouds. Good visibility, some isolated high clouds. Visibilty less than 1000 m, cloud-covered ground.

What cloud sequence can typically be observed during the passage of a cold front?. Squall line with showers of rain and thunderstorms (Cb), gusting wind followed by cumulus clouds with isolated showers of rain. In coastal areas during daytime wind from the coast and forming of cumulus clouds, dissipation of clouds during evening and night. Wind becoming calm, dissipation of clouds and warming during summer; formation of extended high fog layers during winter. Cirrus, thickening altostratus and altocumulus clouds, lowering cloud base with rain, nimbostratus.

What visual flight conditions can be expected within the warm sector of a polar front low?. Moderate to good visibility, scattered clouds. Visibilty less than 1000 m, cloud-covered ground. Good visibility, some isolated high clouds. Moderate visibility, heavy showers and thunderstorms.