PPL PPL Flight Instruments and Weather 3

Question 1

What does a rapidly falling barometric pressure typically indicate?

Accepted Answer

An approaching low-pressure system with deteriorating weather

Answer

Falling pressure usually signals an approaching low and worsening weather.

Question 2

Around a high-pressure system in the Northern Hemisphere, surface winds circulate in which direction?

Accepted Answer

Clockwise and outward

Answer

Highs produce clockwise, outward-flowing surface winds in the Northern Hemisphere.

Question 3

The dew point is best described as the temperature at which the air becomes:

Accepted Answer

Saturated and condensation begins

Answer

At the dew point the air reaches 100% relative humidity and moisture begins to condense.

Question 4

A small spread between temperature and dew point most likely indicates the possibility of:

Accepted Answer

Fog or low clouds

Answer

A narrow temperature/dew-point spread favors fog and low ceilings.

Question 5

Which cloud type is associated with thunderstorms and potential hazards like hail and wind shear?

Accepted Answer

Cumulonimbus

Answer

Cumulonimbus clouds contain thunderstorms with hazards such as hail, lightning, and severe turbulence.

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