Meteorology Flashcards
6 cards from real ATPL practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 6 Meteorology flashcards as text
What type of fog forms when warm, moist air moves over a cooler surface?
Answer: Advection fog
Advection fog forms when warm, moist air is transported horizontally over a cooler surface, causing the air to cool below its dew point.
A SIGMET advisory for the contiguous US is valid for a maximum of how many hours?
Answer: 4 hours
SIGMETs for the contiguous US are valid for up to 4 hours, though convective SIGMETs are valid for only 2 hours.
Which cloud type is most associated with severe turbulence, icing, and lightning?
Answer: Cumulonimbus
Cumulonimbus clouds are towering convective clouds that produce severe turbulence, heavy icing, lightning, and can contain hail.
What is the standard lapse rate of temperature in the troposphere?
Answer: 3°C per 1,000 ft
The International Standard Atmosphere (ISA) defines the standard lapse rate as approximately 3°C (or 2°C) per 1,000 feet — the ISA value is 1.98°C/1,000 ft, commonly rounded to 2°C for calculations, but the standard used in ATPL is 2°C/1,000 ft or 6.5°C/km.
A temperature inversion is characterized by:
Answer: Temperature increasing with altitude
A temperature inversion is a layer of the atmosphere where temperature increases with altitude rather than the normal decrease, trapping pollutants and moisture below.
What weather phenomenon is indicated by a rapidly falling altimeter setting?
Answer: Approaching storm or low-pressure system
A rapidly falling altimeter setting (barometric pressure) indicates an approaching low-pressure system or storm, signaling deteriorating weather conditions.