Aviation Weather Ch3 Exam 100%
Solved Correctly
The most frequent type of ground or surface-based temperature inversion is that which
is produced by
- terrestrial radiation on a clear, relatively still night.
- the movement of colder air under warm air, or the movement of warm air over cold air.
- warm air being lifted rapidly aloft in the vicinity of mountainous terrain. - Answer-
terrestrial radiation on a clear, relatively still night.
On a TAF, the broken cloud layer written as, BKN250 indicates:
- A broken cloud layer at 25,000 feet AGL.
- A broken cloud layer at 250 feet AGL.
- A broken cloud layer at 2,500 feet AGL. - Answer- A broken cloud layer at 25,000 feet
AGL.
One weather phenomenon which will always occur when flying across a front is a
change in the
- wind direction.
- stability of the air mass.
- type of precipitation. - Answer- wind direction.
Which atmospheric layer is typified by a relatively small change in temperature?
- Troposphere.
- Stratosphere.
- Mesosphere. - Answer- Stratosphere.
Seasonal variations of solar radiation primarily occur because the axis of the Earth is
tilted. During June through August the Sun is:
- Lower in the sky in the northern hemisphere.
- Higher in the sky in the southern hemisphere.
- Higher in the sky in the northern hemisphere. - Answer- Higher in the sky in the
northern hemisphere.
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?
- Steady rain.
- Precipitation static.
- Wind-shear turbulence. - Answer- Wind-shear turbulence.
If an unstable air mass is forced upward, what type clouds can be expected?
- Stratus clouds with considerable associated turbulence.
- Clouds with considerable vertical development and associated turbulence.
, - Stratus clouds with little vertical development. - Answer- Clouds with considerable
vertical development and associated turbulence.
Which conditions result in the formation of frost?
- The temperature of the surrounding air is at or below freezing when small drops of
moisture fall on the collecting surface.
- The temperature of the collecting surface is at or below the dewpoint of the adjacent
air and the dewpoint is below freezing.
- The temperature of the collecting surface is at or below freezing when small droplets
of moisture fall on the surface. - Answer- The temperature of the collecting surface is at
or below the dewpoint of the adjacent air and the dewpoint is below freezing.
Crests of standing mountain waves may be marked by stationary, lens-shaped clouds
known as
- mammatocumulus clouds.
- standing lenticular clouds.
- roll clouds. - Answer- standing lenticular clouds.
You define an air mass as:
- Large bodies of air with a uniform temperature and moisture.
- Low pressure areas.
- High pressure areas. - Answer- Large bodies of air with a uniform temperature and
moisture.
What causes sea breezes to move inland?
- Water absorbing and radiating heat faster than the land.
- Warm, dense air moving inland from over the water to replace cool air that has risen
over the land.
- Cool, dense air moving inland from over the water to replace warm air that has risen
over the land. - Answer- Cool, dense air moving inland from over the water to replace
warm air that has risen over the land.
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 ridge is an area of descending air.
- A low-pressure area or trough is an area of descending air. - Answer- A high-pressure
area or ridge is an area of descending air.
When telephoning a weather briefing facility for preflight weather information, pilots
should state
- the aircraft identification or the pilot's name.
- true airspeed.
- fuel on board. - Answer- the aircraft identification or the pilot's name.
What values are used for Winds Aloft Forecasts?
- Magnetic direction and knots.
Solved Correctly
The most frequent type of ground or surface-based temperature inversion is that which
is produced by
- terrestrial radiation on a clear, relatively still night.
- the movement of colder air under warm air, or the movement of warm air over cold air.
- warm air being lifted rapidly aloft in the vicinity of mountainous terrain. - Answer-
terrestrial radiation on a clear, relatively still night.
On a TAF, the broken cloud layer written as, BKN250 indicates:
- A broken cloud layer at 25,000 feet AGL.
- A broken cloud layer at 250 feet AGL.
- A broken cloud layer at 2,500 feet AGL. - Answer- A broken cloud layer at 25,000 feet
AGL.
One weather phenomenon which will always occur when flying across a front is a
change in the
- wind direction.
- stability of the air mass.
- type of precipitation. - Answer- wind direction.
Which atmospheric layer is typified by a relatively small change in temperature?
- Troposphere.
- Stratosphere.
- Mesosphere. - Answer- Stratosphere.
Seasonal variations of solar radiation primarily occur because the axis of the Earth is
tilted. During June through August the Sun is:
- Lower in the sky in the northern hemisphere.
- Higher in the sky in the southern hemisphere.
- Higher in the sky in the northern hemisphere. - Answer- Higher in the sky in the
northern hemisphere.
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?
- Steady rain.
- Precipitation static.
- Wind-shear turbulence. - Answer- Wind-shear turbulence.
If an unstable air mass is forced upward, what type clouds can be expected?
- Stratus clouds with considerable associated turbulence.
- Clouds with considerable vertical development and associated turbulence.
, - Stratus clouds with little vertical development. - Answer- Clouds with considerable
vertical development and associated turbulence.
Which conditions result in the formation of frost?
- The temperature of the surrounding air is at or below freezing when small drops of
moisture fall on the collecting surface.
- The temperature of the collecting surface is at or below the dewpoint of the adjacent
air and the dewpoint is below freezing.
- The temperature of the collecting surface is at or below freezing when small droplets
of moisture fall on the surface. - Answer- The temperature of the collecting surface is at
or below the dewpoint of the adjacent air and the dewpoint is below freezing.
Crests of standing mountain waves may be marked by stationary, lens-shaped clouds
known as
- mammatocumulus clouds.
- standing lenticular clouds.
- roll clouds. - Answer- standing lenticular clouds.
You define an air mass as:
- Large bodies of air with a uniform temperature and moisture.
- Low pressure areas.
- High pressure areas. - Answer- Large bodies of air with a uniform temperature and
moisture.
What causes sea breezes to move inland?
- Water absorbing and radiating heat faster than the land.
- Warm, dense air moving inland from over the water to replace cool air that has risen
over the land.
- Cool, dense air moving inland from over the water to replace warm air that has risen
over the land. - Answer- Cool, dense air moving inland from over the water to replace
warm air that has risen over the land.
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 ridge is an area of descending air.
- A low-pressure area or trough is an area of descending air. - Answer- A high-pressure
area or ridge is an area of descending air.
When telephoning a weather briefing facility for preflight weather information, pilots
should state
- the aircraft identification or the pilot's name.
- true airspeed.
- fuel on board. - Answer- the aircraft identification or the pilot's name.
What values are used for Winds Aloft Forecasts?
- Magnetic direction and knots.
