PPL Flight Instruments and Weather Flashcards
7 cards from real PPL practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 7 PPL Flight Instruments and Weather flashcards as text
Structural icing is most likely to occur when flying through visible moisture at temperatures:
Answer: At or below freezing (0°C)
Icing requires visible moisture and temperatures at or below freezing.
Wind shear near thunderstorms is dangerous primarily because it can cause:
Answer: Sudden changes in airspeed and altitude
Wind shear produces abrupt airspeed and altitude changes that threaten aircraft control.
A temperature inversion is a condition where temperature:
Answer: Increases with altitude
In an inversion, temperature rises rather than falls as altitude increases.
Density altitude is highest, degrading aircraft performance most, when the air is:
Answer: Hot, high, and humid
High temperature, high elevation, and high humidity all raise density altitude and reduce performance.
At a warm front, precipitation and clouds typically form:
Answer: Ahead of the front over a wide area with gradual lift
Warm fronts produce widespread, gradual lifting and steady precipitation ahead of the front.
Mountain wave turbulence is most commonly encountered:
Answer: On the leeward (downwind) side of mountains in strong winds
Strong winds crossing a ridge create turbulent mountain waves on the downwind side.
Fog that forms overnight due to terrestrial cooling on clear, calm nights is called:
Answer: Radiation fog
Radiation fog forms when the ground cools the adjacent air to its dew point on clear, calm nights.