Aviation Weather & Meteorology 3

Question 1

What is a cold front?

Accepted Answer

The leading edge of a cold air mass replacing a warmer air mass

Answer

A cold front is the boundary along which cold, dense air advances and displaces warmer, less dense air.

Question 2

Mountain wave turbulence is most likely to occur on which side of a mountain range?

Accepted Answer

Leeward side (downwind)

Answer

Mountain wave turbulence and rotor clouds typically occur on the leeward (downwind) side of mountain ranges as air oscillates after being disrupted.

Question 3

What does the symbol 'FG' mean in an aviation weather report?

Accepted Answer

Fog

Answer

FG is the standard METAR/SPECI code for fog, indicating visibility reduced by water droplets suspended near the surface.

Question 4

What is the approximate freezing level if surface temperature is 25°C and standard lapse rate applies?

Accepted Answer

12,500 ft MSL

Answer

Using the standard lapse rate of 2°C/1,000 ft, 25°C ÷ 2°C = 12,500 ft MSL is the approximate freezing level.

Question 5

Which AIRMET type (AIRMET Sierra) is issued for which condition?

Accepted Answer

IFR conditions and mountain obscuration

Answer

AIRMET Sierra is issued for IFR conditions (ceilings below 1,000 ft and/or visibility below 3 miles) and mountain obscuration.

Aviation Practice Test