Types and Formation of Fog

The video tutorial explores seven types of fog crucial for pilots to understand: radiation, advection, upslope, steam, freezing, ice, and frontal fog. Each type is explained in terms of formation, conditions, and impact on visibility. The tutorial emphasizes the importance of recognizing these fog types to ensure safe aviation practices, particularly when flying under visual flight rules (VFR).

What is the primary difference between fog and mist in terms of visibility?

• Mist has visibility less than 5/8 statute mile.

• Mist and fog have the same visibility.

• Fog has visibility more than 5/8 statute mile.

• Fog has visibility less than 5/8 statute mile.

Which condition is NOT necessary for the formation of radiation fog?

• Clear sky

• Strong winds

• Calm winds

• Long night

Advection fog typically forms when:

• Cold air moves over warm water.

• Warm, moist air moves over cooler ground or water.

• There is no wind.

• Air rises over a mountain.

What is the process called that causes rising air to cool in upslope fog?

• Condensation

• Evaporation

• Adiabatic cooling

• Radiation

Steam fog is also known as:

• Upslope fog

• Advection fog

• Evaporation fog

• Radiation fog

What is unique about the water droplets in freezing fog?

• They are supercooled and remain liquid.

• They are frozen solid.

• They are larger than normal droplets.

• They evaporate quickly.

Ice fog consists of:

• Supercooled water droplets

• Tiny ice crystals

• Large water droplets

• Condensed steam

Frontal fog forms during:

• A warm or cold front passage

• A high-pressure system

• A calm wind day

• A clear sky night

Precipitation fog is associated with:

• Strong winds

• Clear skies

• A front

• High temperatures

Which type of fog is most likely to form when rain falls through cold, dry air?

• Radiation fog

• Advection fog

• Steam fog

• Precipitation fog