Question 1

The maximum pressure that water vapor molecules would exert if the air were saturated is called the

Accepted Answer

A)  absolute humidity. 
B)  boiling point. 
C)  mixing ratio. 
D)  none of the above 
A)  absolute humidity. 
B)  boiling point. 
C)  mixing ratio. 
D)  none of the above

Question 2

The temperature at which water boils depends mainly on

Accepted Answer

A)  air temperature 
B)  relative humidity 
C)  air pressure 
D)  air density 
E)  the specific heat of air 
A)  air temperature 
B)  relative humidity 
C)  air pressure 
D)  air density 
E)  the specific heat of air

Question 3

Would hazy conditions generally indicate dry or humid conditions?

Accepted Answer

Hazy conditions are typically indicative

Question 4

Which of the following statements is not correct?

Accepted Answer

A)  The length of human hair changes as the relative humidity changes. 
B)  During the winter,low relative humidity can irritate the mucus membranes in the nose and throat. 
C)  The relative humidity is a measure of the air's actual water vapor content. 
D)  A change in the air temperature can change the relative humidity. 
A)  The length of human hair changes as the relative humidity changes. 
B)  During the winter,low relative humidity can irritate the mucus membranes in the nose and throat. 
C)  The relative humidity is a measure of the air's actual water vapor content. 
D)  A change in the air temperature can change the relative humidity.

Question 5

Suppose the dew point of cold outside air is the same as the dew point of the air indoors.If the door is opened and cold air replaces some of the warm 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 
A)  lower than before. 
B)  higher than before. 
C)  the same as before. 
D)  impossible to tell from the information given

Question 6

A sling psychrometer directly measures the relative humidity.

Accepted Answer

A) True 
 B)False

Question 7

Would lowering the temperature in your home during the winter cause the relative humidity to increase or decrease? Why?

Accepted Answer

The answer of Would lowering the temperature in your home...

Question 8

The dew point temperature is a measure of the total amount of water vapor in the air.

Accepted Answer

A) True 
 B)False

Question 9

What physiological effects might you experience during very humid and very dry conditions?

Accepted Answer

The answer of What physiological effects might you experience during...

Question 10

If the amount of water vapor in the atmosphere remains constant,the humidity

Accepted Answer

A)  cannot change. 
B)  must change. 
C)  might change,depending on which measure of humidity is used. 
D)  will only change if we're using absolute humidity as the measure of humidity. 
A)  cannot change. 
B)  must change. 
C)  might change,depending on which measure of humidity is used. 
D)  will only change if we're using absolute humidity as the measure of humidity.

Question 11

In terms of the air temperature and water vapor content,explain how the relative humidity normally changes during the course of a 24-hour day.

Accepted Answer

The answer of In terms of the air temperature and...

Question 12

Which of the following will increase in a rising parcel of air?

Accepted Answer

A)  saturation vapor pressure 
B)  relative humidity 
C)  mixing ratio 
D)  air temperature 
E)  none of the above 
A)  saturation vapor pressure 
B)  relative humidity 
C)  mixing ratio 
D)  air temperature 
E)  none of the above

Question 13

If very cold air is brought indoors and warmed with no change in its moisture content,the saturation vapor pressure of this air will ____ and the relative humidity of this air will ____.

Accepted Answer

A)  increase,increase 
B)  decrease,decrease 
C)  increase,decrease 
D)  decrease,increase 
A)  increase,increase 
B)  decrease,decrease 
C)  increase,decrease 
D)  decrease,increase

Question 14

What is meant by the terms water vapor saturation and saturation vapor pressure? Why does the saturation vapor pressure increase with increasing air temperature?

Accepted Answer

The answer of What is meant by the terms water...

Question 15

Which of the following will decrease in a rising parcel of air?

Accepted Answer

A)  relative humidity 
B)  absolute humidity 
C)  specific humidity 
D)  all of the above 
A)  relative humidity 
B)  absolute humidity 
C)  specific humidity 
D)  all of the above

Question 16

In a blinding snowstorm in Vermont,the air temperature and dew-point temperature are both 30°F.Meanwhile,under clear skies in Arizona,the air temperature is 85°F and the dew point temperature is 38°F.From this information,you could conclude

Accepted Answer

A)  there is more water vapor in the air in Arizona. 
B)  there is more water vapor in the Vermont snowstorm. 
C)  the same amount of water vapor is found in the air in Vermont and Arizona. 
D)  Vermont and Arizona are both located next to the ocean. 
A)  there is more water vapor in the air in Arizona. 
B)  there is more water vapor in the Vermont snowstorm. 
C)  the same amount of water vapor is found in the air in Vermont and Arizona. 
D)  Vermont and Arizona are both located next to the ocean.

Question 17

If the air temperature in a room is 70°F,the saturation vapor pressure is 25 mb,the dew point temperature is 45°F,and the actual vapor pressure is 10 mb,then the relative humidity must be near ____ percent.

Accepted Answer

A)  15 
B)  20 
C)  35 
D)  40 
A)  15 
B)  20 
C)  35 
D)  40

Question 18

If the air temperature remains constant,evaporating water into the air will ____ the dew point and ____ the relative humidity.

Accepted Answer

A)  increase,increase 
B)  increase,decrease 
C)  decrease,increase 
D)  decrease,decrease 
A)  increase,increase 
B)  increase,decrease 
C)  decrease,increase 
D)  decrease,decrease

Question 19

Nighttime temperatures rarely drop below the dew point temperature because

Accepted Answer

A)  the dew will absorb all the heat. 
B)  saturation vapor pressures always increase at night. 
C)  at saturation,latent heat of condensation is released into the air. 
D)  b and c 
A)  the dew will absorb all the heat. 
B)  saturation vapor pressures always increase at night. 
C)  at saturation,latent heat of condensation is released into the air. 
D)  b and c

Question 20

A high water vapor pressure indicates

Accepted Answer

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

The maximum pressure that water vapor molecules would exert if the air were saturated is called the

The temperature at which water boils depends mainly on

Would hazy conditions generally indicate dry or humid conditions?

Which of the following statements is not correct?

Suppose the dew point of cold outside air is the same as the dew point of the air indoors.If the door is opened and cold air replaces some of the warm air,then the new relative humidity indoors would be

A sling psychrometer directly measures the relative humidity.

Would lowering the temperature in your home during the winter cause the relative humidity to increase or decrease? Why?

The dew point temperature is a measure of the total amount of water vapor in the air.

What physiological effects might you experience during very humid and very dry conditions?

If the amount of water vapor in the atmosphere remains constant,the humidity

In terms of the air temperature and water vapor content,explain how the relative humidity normally changes during the course of a 24-hour day.

Which of the following will increase in a rising parcel of air?

If very cold air is brought indoors and warmed with no change in its moisture content,the saturation vapor pressure of this air will and the relative humidity of this air will .

What is meant by the terms water vapor saturation and saturation vapor pressure? Why does the saturation vapor pressure increase with increasing air temperature?

Which of the following will decrease in a rising parcel of air?

In a blinding snowstorm in Vermont,the air temperature and dew-point temperature are both 30°F.Meanwhile,under clear skies in Arizona,the air temperature is 85°F and the dew point temperature is 38°F.From this information,you could conclude

If the air temperature in a room is 70°F,the saturation vapor pressure is 25 mb,the dew point temperature is 45°F,and the actual vapor pressure is 10 mb,then the relative humidity must be near ____ percent.

If the air temperature remains constant,evaporating water into the air will the dew point and the relative humidity.

Nighttime temperatures rarely drop below the dew point temperature because

A high water vapor pressure indicates

Earth and Its Atmosphere

Energy: Warming the Earth and the Atmosphere

Seasonal and Daily Temperatures

Condensation: Dew, Fog, and Clouds

Stability and Cloud Development

Precipitation

Air Pressure and Winds

Wind: Small Scale and Local Systems

Wind: Global Systems

Air Masses and Fronts

Middle-Latitude Cyclones

Weather Forecasting

Thunderstorms and Tornadoes

Hurricanes

Earths Changing Climate

Global Climate

Air Pollution

Light, Color, and Atmospheric Optics

Filters

Exam 4: Atmospheric Humidity

The maximum pressure that water vapor molecules would exert if the air were saturated is called the

The temperature at which water boils depends mainly on

Would hazy conditions generally indicate dry or humid conditions?

Which of the following statements is not correct?

Suppose the dew point of cold outside air is the same as the dew point of the air indoors.If the door is opened and cold air replaces some of the warm air,then the new relative humidity indoors would be

A sling psychrometer directly measures the relative humidity.

Would lowering the temperature in your home during the winter cause the relative humidity to increase or decrease? Why?

The dew point temperature is a measure of the total amount of water vapor in the air.

What physiological effects might you experience during very humid and very dry conditions?

If the amount of water vapor in the atmosphere remains constant,the humidity

In terms of the air temperature and water vapor content,explain how the relative humidity normally changes during the course of a 24-hour day.

Which of the following will increase in a rising parcel of air?

If very cold air is brought indoors and warmed with no change in its moisture content,the saturation vapor pressure of this air will ____ and the relative humidity of this air will ____.

What is meant by the terms water vapor saturation and saturation vapor pressure? Why does the saturation vapor pressure increase with increasing air temperature?

Which of the following will decrease in a rising parcel of air?

In a blinding snowstorm in Vermont,the air temperature and dew-point temperature are both 30°F.Meanwhile,under clear skies in Arizona,the air temperature is 85°F and the dew point temperature is 38°F.From this information,you could conclude

If the air temperature in a room is 70°F,the saturation vapor pressure is 25 mb,the dew point temperature is 45°F,and the actual vapor pressure is 10 mb,then the relative humidity must be near ____ percent.

If the air temperature remains constant,evaporating water into the air will ____ the dew point and ____ the relative humidity.

Nighttime temperatures rarely drop below the dew point temperature because

A high water vapor pressure indicates

Earth and Its Atmosphere

Energy: Warming the Earth and the Atmosphere

Seasonal and Daily Temperatures

Condensation: Dew, Fog, and Clouds

Stability and Cloud Development

Precipitation

Air Pressure and Winds

Wind: Small Scale and Local Systems

Wind: Global Systems

Air Masses and Fronts

Middle-Latitude Cyclones

Weather Forecasting

Thunderstorms and Tornadoes

Hurricanes

Earths Changing Climate

Global Climate

Air Pollution

Light, Color, and Atmospheric Optics

Filters

If very cold air is brought indoors and warmed with no change in its moisture content,the saturation vapor pressure of this air will and the relative humidity of this air will .

If the air temperature remains constant,evaporating water into the air will the dew point and the relative humidity.