BAvn Bachelor of Aviation Aviation Meteorology

Question 1

What is the standard sea-level atmospheric pressure in the International Standard Atmosphere (ISA)?

Accepted Answer

1013.25 hPa

Answer

The ISA defines standard sea-level pressure as 1013.25 hPa (29.92 inHg).

Question 2

Which cloud type is associated with severe turbulence, icing, and thunderstorm activity?

Accepted Answer

Cumulonimbus

Answer

Cumulonimbus clouds are vertically developed storm clouds that produce turbulence, icing, lightning, and heavy precipitation.

Question 3

A temperature inversion typically causes which effect on aircraft performance?

Accepted Answer

Reduced visibility and trapped pollutants near the surface

Answer

A temperature inversion traps cool air near the surface, often reducing visibility and concentrating pollutants in the lower atmosphere.

Question 4

What weather phenomenon is indicated by a SIGMET?

Accepted Answer

Significant meteorological conditions hazardous to all aircraft

Answer

A SIGMET (Significant Meteorological Information) warns all aircraft of hazardous weather such as severe turbulence, icing, or volcanic ash.

Question 5

What is the freezing level in aviation meteorology?

Accepted Answer

The altitude at which the air temperature equals 0°C

Answer

The freezing level is the altitude at which the ambient air temperature is 0°C, critical for predicting airframe icing.

BAvn Bachelor of Aviation Practice Test