M6 - 1D

What is the primary reason that understanding weather is crucial for flight safety?

• It helps in choosing the most scenic routes.

• It allows pilots to avoid hazardous conditions like thunderstorms and icing.

• It guarantees on-time arrivals.

• It is only important for passenger comfort.

How does high temperature affect aircraft performance?

• It increases air density, improving engine power.

• It has no effect on aircraft performance.

• It decreases air density, leading to longer takeoff rolls and reduced climb rates.

• It makes the aircraft feel like it's flying at a lower altitude.

What is a temperature inversion?

• A rapid decrease in temperature with altitude.

• When temperature increases with altitude, which is opposite the normal lapse rate.

• The standard rate at which temperature changes.

• A phenomenon that only occurs over valleys.

Why must pilots regularly update their altimeter setting?

• To measure the aircraft's speed more accurately.

• Because flying from a high-pressure to a low-pressure area without updating can make the altimeter read higher than the actual altitude.

• To comply with passenger requests.

• To switch between QNH and QFE settings every hour.

What does a high dew point indicate?

• There is very little moisture in the air.

• The air is very cold.

• There is a large amount of moisture in the air.

• Fog is impossible to form.

Why do pilots prefer to take off and land into a headwind?

• It pushes the aircraft down, making it more stable.

• It reduces the required runway distance and increases lift.

• It is the only direction allowed by Air Traffic Control.

• It helps the aircraft achieve a higher ground speed.

What are jet streams?

• Slow-moving air currents near the Earth's surface.

• High-altitude, fast-moving air currents that flow from west to east.

• A type of vertical wind shear.

• Localized winds that only occur over land.

Which type of cloud is associated with severe weather like thunderstorms and hail?

• Cirrus

• Stratus

• Cumulonimbus

• Altostratus

What is a METAR?

• A forecast of weather conditions for the next 24-30 hours.

• A pilot report of in-flight conditions.

• A warning for severe weather dangerous to all aircraft.

• An hourly report of current, observed weather conditions at an airport.

What is the key difference between a SIGMET and an AIRMET?

• SIGMETs are for moderate turbulence, while AIRMETs are for severe icing.

• SIGMETs are issued for conditions dangerous to all aircraft, while AIRMETs are for hazards affecting smaller aircraft.

• SIGMETs are forecasts, while AIRMETs are observation reports.

• SIGMETs cover wind, while AIRMETs cover cloud cover.