Question 1

If the air temperature increased, with no addition or removal of water vapor, the actual vapor pressure would ____.

Accepted Answer

A)  increase
B)  decrease
C)  stay the same
D)  become greater than the saturation vapor pressure
E)  become less than the saturation vapor pressure

Question 2

Which of the following BEST describes the wet-bulb temperature?

Accepted Answer

A)  The highest temperature that can be attained by evaporating water into the air
B)  The highest temperature that can be attained by condensing water from the air
C)  The lowest temperature that can be attained by evaporating water into the air
D)  The lowest temperature that can be attained by condensing water from the air
E)  None of these are correct.

Question 3

Saturation vapor pressure depends primarily on ____.

Accepted Answer

A)  the mixing ratio
B)  altitude
C)  air pressure
D)  the dew point temperature
E)  air temperature

Question 4

The ____ the temperature of a gas, the faster its molecules move.

Accepted Answer

The answer of The ____ the temperature of a gas,...

Question 5

If all of Earth's water vapor were to suddenly condense and fall as rain, it would be enough to cover the entire globe with ____ of water.

Accepted Answer

A)  5 centimeters (2 inches) 
B)  100 meters
C)  2.5 centimeters (1 inch) 
D)  1,000 meters
E)  10 centimeters (4 inches)

Question 6

Which of the following always decreases in a rising parcel of air?

Accepted Answer

A)  Relative humidity
B)  Absolute humidity
C)  Specific humidity
D)  Mixing ratio
E)  Dew point

Question 7

What will occur if a glass of water at a stable temperature is surrounded by saturated air?

Accepted Answer

A)  The level of the water in the glass would slowly decrease.
B)  The water's temperature would slowly increase.
C)  The level of the water in the glass would not change.
D)  The water's temperature would slowly decrease.
E)  The level of the water in the glass would slowly increase.

Question 8

The relationship between the mass of water vapor in an air parcel and the mass of all air in the same parcel (including vapor) is called ____.

Accepted Answer

A)  specific humidity
B)  relative humidity
C)  absolute humidity
D)  dew point
E)  mixing ratio

Question 9

When the temperature is 98 degrees Fahrenheit and the relative humidity is 55 percent, how would you classify the possible heat-related risk?

Accepted Answer

A)  No caution or danger
B)  Caution
C)  Extreme caution
D)  Danger
E)  Extreme danger

Question 10

Explain why the dew point temperature provides a better indication of the actual amount of water vapor in the air than relative humidity.

Accepted Answer

Students need to demonstrate knowledge t...

Question 11

Evaporation and transpiration from continental areas amount to only about ____ percent of the nearly 1.5 billion gallons of water vapor that annually evaporate into the atmosphere.

Accepted Answer

A)  15
B)  20
C)  25
D)  30
E)  35

Question 12

Plants give up moisture by a process called perspiration.

Accepted Answer

A) True 
 B)False

Question 13

The time of day when the relative humidity reaches a maximum value is usually ____.

Accepted Answer

A)  at the time when the air temperature is highest
B)  in the middle of the afternoon
C)  at the time when the air temperature is lowest
D)  just before sunrise
E)  about midnight

Question 14

Suppose the dew point of not outside air is the same as the dew point of the air indoors. If the door is opened and hot air replaces some of the cool air, then the new relative humidity indoors would be ____.

Accepted Answer

A)  lower than before
B)  higher than before
C)  the same as before
D)  impossible to tell from the information given
E)  zero

Question 15

In the gas state, water molecules are ____ in the liquid state.

Accepted Answer

A)  farther apart than
B)  the same distance apart as
C)  double the distance apart as
D)  three times the distance apart as
E)  closer together than

Question 16

The air's moisture content can be described by measuring the pressure exerted by the water vapor in the air.

Accepted Answer

A) True 
 B)False

Question 17

The partial pressure of water vapor is called the ____.

Accepted Answer

A)  real vapor pressure
B)  true vapor pressure
C)  actual vapor pressure
D)  actual water pressure
E)  true liquid pressure

Question 18

A high water vapor pressure indicates a(n) ____.

Accepted Answer

A)  relatively large number of water vapor molecules in the air
B)  relatively small number of water vapor molecules in the air.
C)  relatively high rate of evaporation
D)  abundant supply of condensation nuclei in the air
E)  relatively high rate of precipitation

Question 19

The ice-to-vapor phase transition is known as ____.

Accepted Answer

A)  melting
B)  evaporation
C)  condensation
D)  sublimation
E)  deposition

Question 20

In order to reduce evaporation and conserve water, do you think it would be better to water a lawn in the early morning or early evening?

Accepted Answer

If you water your lawn on a hot afternoo...

Exam 4: Atmospheric Humidity

What will occur if a glass of water at a stable temperature is surrounded by saturated air?

Correct AnswerverifiedShow Answer

A high water vapor pressure indicates a(n) ____.

Correct AnswerverifiedShow Answer

Saturation vapor pressure depends primarily on ____.

Correct AnswerverifiedShow Answer

Which of the following always decreases in a rising parcel of air?

Correct AnswerverifiedShow Answer

The partial pressure of water vapor is called the ____.

Correct AnswerverifiedShow Answer

Plants give up moisture by a process called perspiration.

Correct AnswerverifiedShow Answer

The time of day when the relative humidity reaches a maximum value is usually ____.

Correct AnswerverifiedShow Answer

Which of the following BEST describes the wet-bulb temperature?

Correct AnswerverifiedShow Answer

The air's moisture content can be described by measuring the pressure exerted by the water vapor in the air.

Correct AnswerverifiedShow Answer

The ice-to-vapor phase transition is known as ____.

Correct AnswerverifiedShow Answer

Evaporation and transpiration from continental areas amount to only about ____ percent of the nearly 1.5 billion gallons of water vapor that annually evaporate into the atmosphere.

Correct AnswerverifiedShow Answer

Suppose the dew point of not outside air is the same as the dew point of the air indoors. If the door is opened and hot air replaces some of the cool air, then the new relative humidity indoors would be ____.

Correct AnswerverifiedShow Answer

When the temperature is 98 degrees Fahrenheit and the relative humidity is 55 percent, how would you classify the possible heat-related risk?

Correct AnswerverifiedShow Answer

The ____ the temperature of a gas, the faster its molecules move.

Correct AnswerverifiedShow Answer

In the gas state, water molecules are ____ in the liquid state.

Correct AnswerverifiedShow Answer

If the air temperature increased, with no addition or removal of water vapor, the actual vapor pressure would ____.

Correct AnswerverifiedShow Answer

If all of Earth's water vapor were to suddenly condense and fall as rain, it would be enough to cover the entire globe with ____ of water.

Correct AnswerverifiedShow Answer

The relationship between the mass of water vapor in an air parcel and the mass of all air in the same parcel (including vapor) is called ____.

Correct AnswerverifiedShow Answer

In order to reduce evaporation and conserve water, do you think it would be better to water a lawn in the early morning or early evening?

Correct AnswerverifiedIf you water your lawn on a hot afternoo...View AnswerShow Answer

Explain why the dew point temperature provides a better indication of the actual amount of water vapor in the air than relative humidity.

Correct AnswerverifiedStudents need to demonstrate knowledge t...View AnswerShow Answer

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If you water your lawn on a hot afternoo...
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Correct Answer
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Students need to demonstrate knowledge t...
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