Question 1

Suppose two ocean currents with different temperatures are flowing next to one another.If the wind blows perpendicular to the currents,we would expect to find

Accepted Answer

A)   radiation fog.
B)   steam fog.
C)   lenticular clouds.
D)   advection fog.

Question 2

Suppose the sky is completely covered with a thin,white layered-type cloud.You look at the ground and see that objects cast a distinct shadow.From this you conclude that the cloud type must be

Accepted Answer

A)   stratus.
B)   nimbostratus.
C)   cirrostratus.
D)   stratocumulus.

Question 3

Which association below is not correct?

Accepted Answer

A)   cumulus congestus - anvil top
B)   cumulus - fair weather cumulus
C)   altocumulus castellanus - resemble "little castles"
D)   stratus fractus - scud
E)   cumulonimbus - thunderstorm clouds

Question 4

Condensation nuclei may be

Accepted Answer

A)   particles of dust.
B)   nitric acid particles.
C)   smoke from forest fires.
D)   salt from the ocean.
E)   all of the above

Question 5

Would it be possible for rising air to remain cloud-free? If not,why not? If so,how?

Accepted Answer

Yes, it is possible for rising air to remain cloud-free under certain conditions. Cloud formation depends on several factors, including temperature, humidity, and the presence of aerosols or particles around which water droplets can condense.

When air rises, it expands due to the lower pressure at higher altitudes. This expansion causes the air to cool, a process known as adiabatic cooling. If the air contains enough moisture, and if it cools to its dew point (the temperature at which air becomes saturated and condensation begins), cloud formation can occur. However, if the rising air does not reach its dew point, or if the air is too dry (low humidity), then clouds will not form.

Here are some scenarios in which rising air might remain cloud-free:

1. **Dry Air:** If the air is very dry, it may not contain enough water vapor to reach saturation, even when it cools as it rises. This can happen in desert regions or during certain weather conditions when the air mass is particularly dry.

2. **Stable Atmospheric Conditions:** If the atmosphere is stable, it can suppress the vertical movement of air. In a stable atmosphere, even if air starts to rise, it may not continue to rise very far or may warm due to subsidence (downward movement) elsewhere, preventing it from cooling enough to reach the dew point.

3. **Warm Air Aloft:** Sometimes, there can be a layer of warmer air above the surface, known as an inversion layer. If rising air encounters this warmer layer, it may not cool sufficiently to reach the dew point, preventing cloud formation.

4. **Rapid Uplift:** In some cases, air may rise so rapidly that it does not have time to cool to the dew point before reaching a level in the atmosphere where the surrounding air is too warm or too dry for clouds to form.

5. **Presence of Aerosols:** Cloud droplets typically form around tiny particles called cloud condensation nuclei (CCN). In very clean air with few aerosols, there may not be enough CCN for cloud droplets to form, even if the air is saturated.

In summary, while rising air often leads to cloud formation, it is possible for it to remain cloud-free if the conditions are not conducive to reaching the dew point, if the air is too dry, if the atmosphere is stable, if there is warm air aloft, or if there is a lack of aerosols.

Question 6

List one or more key identifying features for each of the ten basic cloud types.Which cloud types might have fairly similar appearances and thus be difficult to identify?

Accepted Answer

no answer

Question 7

Which below is NOT a way in which a contrail may form?

Accepted Answer

A)   from water vapor in the engine exhaust mixing with air
B)   by air cooling as it passes over the aircraft's wings
C)   due to heating of the air by the engine exhaust
D)   all of the above

Question 8

List and discuss some of the effects that you think weather satellites may have had on the field of weather prediction.

Accepted Answer

Weather satellites have had a significan...

Question 9

A vertically-viewing detector is located 8,000 feet from a rotating beam ceilometer.Determine the height of the cloud base assuming a signal is detected when the ceilometer beam elevation angle is 30o.

Accepted Answer

To determine the height of the cloud bas...

Question 10

Suppose two unsaturated air masses mix horizontally.The resulting mixture cannot possibly be saturated.

Accepted Answer

A) True 
 B)False

Question 11

On a clear night,the minimum temperature drops to 34 F.The following night,fog forms early in the evening.It is a good bet the minimum temperature will not be as low because of the

Accepted Answer

A)   enhancement of the greenhouse effect by the fog cloud.
B)   trapping of smoke and dust by the water vapor.
C)   calm winds that accompany fog.
D)   all of the above

Question 12

Frost typically forms on the inside of a windowpane (rather than the outside) because

Accepted Answer

A)   the inside of the pane is colder than the outside.
B)   there is more water vapor touching the inside of the pane.
C)   there is less water vapor touching the inside of the pane.

Question 13

Fog is often described as a cloud that forms at ground level.In what ways are the formation of fog and clouds similar and different?

Accepted Answer

The answer of Fog is often described as a cloud...

Question 14

The cooling of the ground to produce dew is mainly the result of

Accepted Answer

A)   conduction.
B)   radiational cooling.
C)   cooling due to the release of latent heat.
D)   advection.

Question 15

Condensation nuclei are important in the atmosphere because

Accepted Answer

A)   they provide most of the minerals found in water.
B)   they make it easier for condensation to occur in the atmosphere.
C)   they are the sole producers of smog.
D)   they filter out sunlight.
E)   they provide the only means we have of tracking wind motions.

Question 16

When temperatures are below freezing,the temperature to which air must be cooled in order for a phase change to occur is called the

Accepted Answer

A)   wet bulb.
B)   dew point.
C)   frost point.
D)   heat index.

Question 17

Fog is a major hazard to aviation.

Accepted Answer

A) True 
 B)False

Question 18

Infrared satellite images are computer enhanced to

Accepted Answer

A)   increase the contrast between specific features in the picture.
B)   show where thick clouds with cold tops are located.
C)   show where clouds with tops near the freezing level are located.
D)   all of the above

Question 19

An anvil-shaped top is most often associated with

Accepted Answer

A)   cumulonimbus.
B)   cumulus congestus.
C)   altocumulus.
D)   cumulus humilis.

Question 20

When clouds are viewed near the horizon,the individual cloud elements usually

Accepted Answer

A)   appear closer together than is actually the case.
B)   appear farther apart than is actually the case.
C)   appear lighter in color than is actually the case.
D)   appear to have more vertical development than is actually the case. A

Exam 5: Condensation: Dew, Fog, and Clouds

Suppose two ocean currents with different temperatures are flowing next to one another.If the wind blows perpendicular to the currents,we would expect to find

Correct Answer
verified

Suppose the sky is completely covered with a thin,white layered-type cloud.You look at the ground and see that objects cast a distinct shadow.From this you conclude that the cloud type must be

Correct Answer
verified

Which association below is not correct?

Correct Answer
verified

Condensation nuclei may be

Correct Answer
verified

Would it be possible for rising air to remain cloud-free? If not,why not? If so,how?

List one or more key identifying features for each of the ten basic cloud types.Which cloud types might have fairly similar appearances and thus be difficult to identify?

Correct Answer
verified
no answer

Which below is NOT a way in which a contrail may form?

Correct Answer
verified

List and discuss some of the effects that you think weather satellites may have had on the field of weather prediction.

Correct Answer
Answered by ExamLex AI
Weather satellites have had a significan...
View Answer

A vertically-viewing detector is located 8,000 feet from a rotating beam ceilometer.Determine the height of the cloud base assuming a signal is detected when the ceilometer beam elevation angle is 30^o.

Correct Answer
Answered by ExamLex AI
To determine the height of the cloud bas...
View Answer

Suppose two unsaturated air masses mix horizontally.The resulting mixture cannot possibly be saturated.

Correct Answer
verified

On a clear night,the minimum temperature drops to 34 F.The following night,fog forms early in the evening.It is a good bet the minimum temperature will not be as low because of the

Correct Answer
verified

Frost typically forms on the inside of a windowpane (rather than the outside) because

Correct Answer
verified

Fog is often described as a cloud that forms at ground level.In what ways are the formation of fog and clouds similar and different?

Correct Answer
verified

The cooling of the ground to produce dew is mainly the result of

Correct Answer
verified

Condensation nuclei are important in the atmosphere because

Correct Answer
verified

When temperatures are below freezing,the temperature to which air must be cooled in order for a phase change to occur is called the

Correct Answer
verified

Fog is a major hazard to aviation.

Correct Answer
verified

Infrared satellite images are computer enhanced to

Correct Answer
verified

An anvil-shaped top is most often associated with

Correct Answer
verified

When clouds are viewed near the horizon,the individual cloud elements usually

Correct Answer
verified
A

Exam 5: Condensation: Dew, Fog, and Clouds

Suppose two ocean currents with different temperatures are flowing next to one another.If the wind blows perpendicular to the currents,we would expect to find

Correct AnswerverifiedShow Answer

Suppose the sky is completely covered with a thin,white layered-type cloud.You look at the ground and see that objects cast a distinct shadow.From this you conclude that the cloud type must be

Correct AnswerverifiedShow Answer

Which association below is not correct?

Correct AnswerverifiedShow Answer

Condensation nuclei may be

Correct AnswerverifiedShow Answer

Would it be possible for rising air to remain cloud-free? If not,why not? If so,how?

List one or more key identifying features for each of the ten basic cloud types.Which cloud types might have fairly similar appearances and thus be difficult to identify?

Correct Answerverifiedno answer

Which below is NOT a way in which a contrail may form?

Correct AnswerverifiedShow Answer

List and discuss some of the effects that you think weather satellites may have had on the field of weather prediction.

Correct AnswerAnswered by ExamLex AIWeather satellites have had a significan...View AnswerShow Answer

A vertically-viewing detector is located 8,000 feet from a rotating beam ceilometer.Determine the height of the cloud base assuming a signal is detected when the ceilometer beam elevation angle is 30o.

Correct AnswerAnswered by ExamLex AITo determine the height of the cloud bas...View AnswerShow Answer

Suppose two unsaturated air masses mix horizontally.The resulting mixture cannot possibly be saturated.

Correct AnswerverifiedShow Answer

On a clear night,the minimum temperature drops to 34 F.The following night,fog forms early in the evening.It is a good bet the minimum temperature will not be as low because of the

Correct AnswerverifiedShow Answer

Frost typically forms on the inside of a windowpane (rather than the outside) because

Correct AnswerverifiedShow Answer

Fog is often described as a cloud that forms at ground level.In what ways are the formation of fog and clouds similar and different?

Correct AnswerverifiedShow Answer

The cooling of the ground to produce dew is mainly the result of

Correct AnswerverifiedShow Answer

Condensation nuclei are important in the atmosphere because

Correct AnswerverifiedShow Answer

When temperatures are below freezing,the temperature to which air must be cooled in order for a phase change to occur is called the

Correct AnswerverifiedShow Answer

Fog is a major hazard to aviation.

Correct AnswerverifiedShow Answer

Infrared satellite images are computer enhanced to

Correct AnswerverifiedShow Answer

An anvil-shaped top is most often associated with

Correct AnswerverifiedShow Answer

When clouds are viewed near the horizon,the individual cloud elements usually

Correct AnswerverifiedA

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified
no answer

Correct Answer
verified

Correct Answer
Answered by ExamLex AI
Weather satellites have had a significan...
View Answer

A vertically-viewing detector is located 8,000 feet from a rotating beam ceilometer.Determine the height of the cloud base assuming a signal is detected when the ceilometer beam elevation angle is 30^o.

Correct Answer
Answered by ExamLex AI
To determine the height of the cloud bas...
View Answer

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

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verified

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verified

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verified

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verified

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verified
A