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
What does a rapidly falling barometric pressure typically indicate?
Answer: An approaching low-pressure system with deteriorating weather
Falling pressure usually signals an approaching low and worsening weather.
Around a high-pressure system in the Northern Hemisphere, surface winds circulate in which direction?
Answer: Clockwise and outward
Highs produce clockwise, outward-flowing surface winds in the Northern Hemisphere.
The dew point is best described as the temperature at which the air becomes:
Answer: Saturated and condensation begins
At the dew point the air reaches 100% relative humidity and moisture begins to condense.
A small spread between temperature and dew point most likely indicates the possibility of:
Answer: Fog or low clouds
A narrow temperature/dew-point spread favors fog and low ceilings.
Which cloud type is associated with thunderstorms and potential hazards like hail and wind shear?
Answer: Cumulonimbus
Cumulonimbus clouds contain thunderstorms with hazards such as hail, lightning, and severe turbulence.
Stable air masses are generally characterized by:
Answer: Stratiform clouds, steady precipitation, and poor visibility
Stable air produces layered stratiform clouds, steady precipitation, and often reduced visibility.
What is the standard temperature and pressure at sea level in the International Standard Atmosphere?
Answer: 15°C and 29.92 inHg
The ISA sea-level standard is 15°C and 29.92 inches of mercury.