Aviation Weather & Meteorology 1 — Questions and Answers
Question 1: What aviation weather product provides a 24- and 48-hour synopsis and forecast for a region?
- METAR
- SIGMET
- Area Forecast (FA) (Correct answer)
- PIREP
Correct answer: Area Forecast (FA)
The Area Forecast (FA) provides a synopsis and VFR cloud and weather forecast for a large region over a 24- to 48-hour period.
Question 2: A SIGMET is issued for which type of weather condition?
- Light turbulence only
- Significant meteorological conditions hazardous to all aircraft (Correct answer)
- Low IFR conditions only
- Thunderstorms below 5,000 ft
Correct answer: Significant meteorological conditions hazardous to all aircraft
SIGMETs (Significant Meteorological Information) are issued for weather hazards significant to all aircraft, such as severe turbulence, icing, or volcanic ash.
Question 3: What is the standard lapse rate of temperature in the atmosphere?
- 1°C per 1,000 ft
- 2°C per 1,000 ft (Correct answer)
- 3°C per 1,000 ft
- 4°C per 1,000 ft
Correct answer: 2°C per 1,000 ft
The standard lapse rate is approximately 2°C (3.5°F) per 1,000 ft increase in altitude in the troposphere.
Question 4: Which type of fog forms when warm, moist air moves over a cooler surface?
- Radiation fog
- Advection fog (Correct answer)
- Upslope fog
- Steam fog
Correct answer: Advection fog
Advection fog forms when warm, moist air flows horizontally over a cooler surface, causing the air to cool to its dew point.
Question 5: What weather condition is associated with a rapidly rising or falling altimeter setting?
- Stable air and clear skies
- Rapidly changing weather such as an approaching front (Correct answer)
- Steady trade winds
- High-pressure dominance
Correct answer: Rapidly changing weather such as an approaching front
Rapidly changing altimeter settings indicate quickly changing atmospheric pressure, typically associated with approaching fronts or intense weather systems.
Question 6: What does dew point represent in aviation meteorology?
- The temperature at which precipitation falls
- The temperature at which air becomes saturated and condensation begins (Correct answer)
- The freezing level altitude
- The temperature differential between day and night
Correct answer: The temperature at which air becomes saturated and condensation begins
Dew point is the temperature to which air must be cooled at constant pressure for water vapor to condense into liquid water.
Aviation Weather & Meteorology 1
What aviation weather product provides a 24- and 48-hour synopsis and forecast for a region?