METEOROLOGY - CAAP CPL

Which is true regarding cold front occlusion? The air ahead of the warm front.... -Is colder than the air behind the overtaking cold front. -Is warmer than the air behind the overtaking cold front. -Has the same temperature as the air behind the overtaking cold front.

-Is warmer than the air behind the overtaking cold front.

What is the standard temperature at the 10,000 feet? A. -5°C B. -15°C C. +5°C

A. -5°C

What are the standard temperature and pressure values for sea level? -15°C and 29.92" Hg -59°F and 1013.2" Hg -15°C and 19.92" Mb

-15°C and 29.92" Hg

Which is true with respect to a high-or-low pressure system? -A high-pressure area or ridge is an area of rising air. -A high-pressure area or trough is an area descending air. -A high-pressure area or ridge is an area of descending air.

-A high-pressure area or ridge is an area of descending air.

Ice pellets encountered during flight are normally evidence that: -A warm front has passed -A warm front is about to pass -There are thunderstorms in the area

-A warm front is about to pass

Which feature is associated with the tropopause? -Constant height above the Earth -Abrupt change in temperature lapse rate. -Absolute upper limit of cloud formation

-Abrupt change in temperature lapse rate.

Turbulence that is encountered above 15,000 feet AGL not associated with cumuliform cloudiness, including thunderstorms, should be reported as: -Severe turbulence -Clear air turbulence -Convective turbulence

-Clear air turbulence

With regards to windflow patterns show on surface analysis charts; when the isobars are..... Close together, the pressure gradient force is slight and wind velocities are weaker -Not close together, the pressure gradient force is greater and wind velocities are stronger. -Close together, the pressure gradient force is greater and wind velocities are stronger.

-Close together, the pressure gradient force is greater and wind velocities are stronger.

What feature is normally associated with the cumulus stage of a thunderstorm? -Roll cloud -Continuous updraft -Beginning of rain at the surface

-Continuous updraft

What prevents air from flowing directly from high-pressure are to low-pressure areas? -Coriolis Force -Surface friction -Pressure gradient force

-Coriolis Force

A moist, unstable air mass is characterized by..... -Poor visibility and smooth air -Cumiliform clouds and showery precipitation -Stratiform clouds and continuous precipitation

-Cumiliform clouds and showery precipitation

Which characteristics of a cold air mass moving over a warm surface? -Cumiliform clouds, turbulence, and poor visibility. -Cumiliform clouds, turbulence, and good visibility. -Stratiform clouds, smooth air and poor visibility.

-Cumiliform clouds, turbulence, and good visibility.

What visible signs indicate extreme turbulence in thunderstorms? -Base of the clouds near the surface, heavy rain and hail. -Low ceiling and visibility, hail and precipitation static. -Cumulonimbus clouds, very frequent lightning and roll clouds

-Cumulonimbus clouds, very frequent lightning and roll clouds

Which is true regarding actual air temperature and due point temperature spread? The temperature spread..... -Decreases as the relative humidity decreases. -Decreases as the relative humidity increases. -Increases as the relative humidity increases

-Decreases as the relative humidity increases.

During the life cycle of a thunderstorm, which stage is characterized predominately by downdrafts? -Mature -Developing -Dissipating

-Dissipating

Moisture is added to a parcel of air by..... -Sublimation and condensation -Evaporation and condensation -Evaporation and sublimation

-Evaporation and sublimation

Fog produced by frontal activity is a result of saturation due to..... -Nocturnal cooling -Adiabatic cooling -Evaporation of precipitation

-Evaporation of precipitation

Hazardous wind shear is commonly encountered -Near warm or stationary frontal activity -When the wind velocity is stronger than 35 knots -In area of temperature inversion and near thunderstorms

-In area of temperature inversion and near thunderstorms

With respect to advection fog, which statement is true? -It is slow to develop and dissipates quite rapidly -It forms almost exclusively at night or near daybreak -It can appear suddenly during day or night, and it is more persistent than radiation fog

-It can appear suddenly during day or night, and it is more persistent than radiation fog

When flying low over hilly terrain, ridges, or mountain ranges, the greatest potential from turbulent air currents will usually be encountered on the: -Leeward side when flying with a tailwind -Leeward side when flying into the wind -Windward side when flying into the wind

-Leeward side when flying into the wind

What are the characteristic of stable air? -Good visibility, steady precipitation, stratus clouds -Poor visibility, steady precipitation, stratus clouds -Poor visibility, intermittent precipitation, cumulus clouds

-Poor visibility, steady precipitation, stratus clouds

During an approach, the most important and most easily recognized means of being alerted to possible wind shear is monitoring the: -Amount of trim required to relieve control pressures -Heading changes necessary to remain on the runway centreline -Power and vertical velocity required to remain on the proper glidepath

-Power and vertical velocity required to remain on the proper glidepath

What causes wind? -The earth's rotation -Air mass modification -Pressure differences

-Pressure differences

Which is a characteristic of stable air? -Cumiliform clouds -Excellent visibility -Restricted visibility

-Restricted visibility

When an air mass is stable, which of these conditions is most likely to exist? -Numerous towering cumulus and cumulonimbus clouds -Moderate to severe turbulence at the lower levels -Smoke, dust, haze, etc., concentrated at the lower levels with resulting poor visibility

-Smoke, dust, haze, etc., concentrated at the lower levels with resulting poor visibility

The most severe weather conditions such as destructive winds, heavy hail, and tornadoes, are generally associated with: -Slow-moving warm fronts which slope above the tropopause -Squall lines -Fast-moving occluded fronts

-Squall lines

The conditions necessary for the formation of stratiform clouds are a lifting action and: -Unstable, dry air -Stable, moist air -Unstable, moist air

-Stable, moist air

From which measurement of the atmosphere can stability be determined? -Atmospheric pressure -The ambient lapse rate -The dry adiabatic rate

-The ambient lapse rate

Select the true statement pertaining to the life's cycle of a thunderstorm. -Updrafts continue to develop throughout the dissipating stage of a thunderstorm. -The beginning of rain at the Earth's surface indicates the mature stage of the thunderstorm. -The beginning of rain at the Earth's surface indicates the dissipating stage of the thunderstorm.

-The beginning of rain at the Earth's surface indicates the mature stage of the thunderstorm.

Which weather phenomenon signals the beginning of the mature stage of thunderstorm? -The start of rain -The appearance of an anvil top -Growth rate of cloud is maximum

-The start of rain

Which statement is true concerning squall lines? -They form slowly, but move rapidly. -They are associated with frontal system only -They offer the most intense weather hazards to aircraft

-They offer the most intense weather hazards to aircraft

Which combination of weather-producing variables would likely result in cumuliform type clouds, good visibility, and showery rain? -Stable, moist air and orographic lifting -Unstable, moist air and orographic lifting -Unstable, moist air and no lifting mechanism

-Unstable, moist air and orographic lifting

Which would decrease the stability of an air mass? -Warming from below -Cooling from below -Decrease in water vapor

-Warming from below

Every physical process of weather is accompanied by or is the result of..... -a heat exchange -the movement of air -a pressure differential

-a heat exchange

The jet stream and associated clear air turbulence can sometimes be visually identified in flight by..... -dust or haze at flight level -long streaks of cirrus clouds -a constant outside air temperature

-long streaks of cirrus clouds