Met 10

43問 • 1年前

Via

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A stable air mass is most likely to have which characteristic?

Poor surface visibility.

The suffix "nimbus,'' used in naming clouds, means:

a rain cloud.

Clouds are divided into four families according to their:

height range

Crests of standing mountain waves may be marked by stationary, lens-shaped clouds known as:

standing lenticular clouds.

What clouds have the greatest turbulence?

Cumulonimbus

What cloud types would indicate convective turbulence?

Towering cumulus clouds

Possible mountain wave turbulence could be anticipated when winds of 40 knots or greater blow:

across a mountain ridge and the air is stable.

Every physical process of weather is accompanied by, or is the result of, a:

heat exchange

What causes variations in altimeter settings between weather reporting points?

Unequal heating of the Earth's surface.

What measurement can be used to determine the stability of the atmosphere?

Actual lapse rate.

What would decrease the stability of an air mass?

Warming from below.

What is the characteristic of stable air?

Stratiform clouds

Clouds, fog, or dew will always form when:

water vapor condenses.

The amount of water vapor which air can hold depends on the:

air temperature.

What are the processes by which moisture is added to unsaturated air?

Evaporation and sublimation.

What is meant by the term 'dewpoint'?

The temperature to which air must be cooled to become saturated.

The greatest vortex strength occurs when the generating aircraft is:

heavy, clean, and slow.

When taking off or landing at an airport where heavy aircraft are operating, one should be particularly alert to the hazards of wingtip vortices because this turbulence tends to?

Sink into the flight path of aircraft operating below the aircraft generating the turbulence.

Which weather phenomenon is always associated with a thunderstorm?

Lightning.

Wingtip vortices are created only when an aircraft is?

Developing lift.

When landing behind a large aircraft, the pilot should avoid wake turbulence by staying?

Above the large aircraft's final approach path and landing beyond the large aircraft's touchdown point.

When departing behind a heavy aircraft, the pilot should avoid wake turbulence by maneuvering the aircraft?

Above and upwind from the heavy aircraft.

What feature is normally associated with the cumulus stage of a thunderstorm?

Continuous updraft.

Which weather phenomenon signals the beginning of the mature stage of a thunderstorm?

Precipitation beginning to fall.

What conditions are necessary for the formation of thunderstorms?

High humidity, lifting force, and unstable conditions.

During the life cycle of a thunderstorm, which stage is characterized predominately by downdrafts:

dissipating

Thunderstorms reach their greatest intensity during the:

mature stage

The boundary between two different air masses is referred to as a:

front

One of the most easily recognized discontinuities across a front is:

a change in temperature

One weather phenomenon which will always occur when flying across a front is a change in the:

wind direction

Where does wind shear occur?

At all altitudes, in all directions.

What situation is most conducive to the formation of radiation fog?

Warm, moist air over low, flatland areas on clear, calm nights.

In which situation is advection fog most likely to form?

An Airmass moving inland from the coast in winter.

If there is thunderstorm activity in the vicinity of an airport at which you plan to land, which hazardous atmospheric phenomenon might be expected on the landing approach?

Wind-shear turbulence.

One in-flight condition necessary for structural icing to form is:

visible moisture.

Under which condition will pressure altitude be equal to true altitude?

When standard atmospheric conditions exist.

Under what condition is pressure altitude and density altitude the same value?

At standard temperature.

If a flight is made from an area of low pressure into an area of high pressure without the altimeter setting being adjusted, the altimeter will indicate?

Lower than the actual altitude above sea level.

Which condition would cause the altimeter to indicate a lower altitude than true altitude?

Air temperature warmer than standard.

Which factor would tend to increase the density altitude at a given airport?

An increase in ambient temperature.

What is density altitude?

Pressure altitude corrected for non-standard temperature. Used for performance calculations.

What is pressure altitude?

Altitude above the standard 29.92 Hg plane (QNE). Used when flying above the transition altitude (18,000' in the US).

Barometric what happens when an altimeter setting is changed

700 ft

CPL HUMAN PERFORMANCE AND LIMITATIONS (1)

Via · 78問 · 1年前