CGI Weather & Meteorology

Question 1

What weather phenomenon is associated with a temperature inversion?

Accepted Answer

Reduced visibility and fog near the surface

Answer

A temperature inversion traps moisture and pollutants near the surface, often causing fog and reduced visibility.

Question 2

Which type of fog forms when warm, moist air moves over a cooler surface?

Accepted Answer

Advection fog

Answer

Advection fog forms when warm, moist air moves horizontally over a cooler surface, cooling the air to its dew point.

Question 3

A SIGMET (WS) is issued for which conditions?

Accepted Answer

Severe or extreme turbulence, severe icing, or volcanic ash

Answer

SIGMETs are issued for hazardous weather significant to all aircraft, including severe turbulence, severe icing, and volcanic ash.

Question 4

What is the standard lapse rate of temperature in the standard atmosphere?

Accepted Answer

2°C per 1,000 feet

Answer

The standard lapse rate is approximately 2°C (3.5°F) per 1,000 feet of altitude increase in the troposphere.

Question 5

Which cloud type is most associated with thunderstorm activity?

Accepted Answer

Cumulonimbus

Answer

Cumulonimbus clouds are the hallmark of thunderstorm activity, capable of reaching into the tropopause.

CGI - Certified Ground Instructor Practice Test