Question 1

Condensation is most likely to happen when air ____ and the speed of the water vapor molecules ____.​

Accepted Answer

A) remains the same temperature;decreases 
B) cools: increases 
C) ​cools;decreases 
D) ​warms;increases 
E) ​warms;decreases 
A) remains the same temperature;decreases 
B) cools: increases 
C) ​cools;decreases 
D) ​warms;increases 
E) ​warms;decreases C

Question 2

A strand of human hair is known to increase by 2.5 percent as the relative humidity increases from 0 to 100 percent.

Accepted Answer

A) True 
 B)False  True

Question 3

The cycle of moving and transforming water molecules from liquid to vapor and back to liquid again is called the ____________________.

Accepted Answer

hydrologic cycle

Question 4

If the amount of water vapor in a descending atmospheric air parcel remains constant,the specific humidity also remains constant.

Accepted Answer

A) True 
 B)False

Question 5

Under saturated conditions,for every molecule that evaporates,one must condense,and no net loss of liquid or vapor molecules results.

Accepted Answer

A) True 
 B)False

Question 6

Which of the following is the BEST indicator of the actual amount of water vapor in the air?​

Accepted Answer

A) air temperature 
B) saturation vapor pressure 
C) ​relative humidity 
D) ​dew point temperature 
E) ​mixing ratio 
A) air temperature 
B) saturation vapor pressure 
C) ​relative humidity 
D) ​dew point temperature 
E) ​mixing ratio

Question 7

A large family lives in northern Minnesota.This family gets together for a huge dinner three times a year: on Thanksgiving,on Christmas,and on the March equinox.The Thanksgiving and Christmas dinners consist of turkey,ham,mashed potatoes,and lots of boiled vegetables.The equinox dinner is pizza.The air temperature inside the home is about the same for all three meals (70°F),yet everyone remarks about how "warm,cozy,and comfortable" the air feels during the Thanksgiving and Christmas dinners,and how "cool" the inside air feels during the March meal.Explain to the family members why they might feel "warmer" inside the house during Thanksgiving and Christmas and "cooler" during the March equinox.(The answer has nothing to do with the amount or type of food consumed.)

Accepted Answer

The process of cooking the turkey,ham,po

Question 8

As the air temperature increases,with no addition of water vapor to the air,the relative humidity will ____________________.

Accepted Answer

The answer of As the air temperature increases,with no addition...

Question 9

Microscopic bits of dust,smoke,salt,and other particles that commonly are mixed in with air molecules are called ___________________.

Accepted Answer

The answer of Microscopic bits of dust,smoke,salt,and other particles that...

Question 10

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 11

An enterprising travel agent trying to sell you a summer vacation package to Phoenix,Arizona,claims that the summertime relative humidity is above 90 percent.Can this be true? Explain.

Accepted Answer

Student Answers may vary,but overall nee

Question 12

Suppose it is snowing outside and the air is saturated.The air temperature and dew point are both 15°F,and the actual vapor pressure is 3 mb.If this air is brought indoors and warmed to 75°F,what would the relative humidity of this air be,assuming that its moisture content does not change? (The saturation vapor pressure at 75°F is 30 mb).​

Accepted Answer

A) 5 percent 
B) 10 percent 
C) ​30 percent 
D) ​50 percent 
E) ​100 percent 
A) 5 percent 
B) 10 percent 
C) ​30 percent 
D) ​50 percent 
E) ​100 percent

Question 13

Evaporative coolers are primarily used in climates where the summers are​

Accepted Answer

A) hot and humid. 
B) hot and dry. 
C) ​cold and humid. 
D) ​cold and dry. 
E) ​moderate. 
A) hot and humid. 
B) hot and dry. 
C) ​cold and humid. 
D) ​cold and dry. 
E) ​moderate.

Question 14

What happens when air is saturated?​

Accepted Answer

A) The air temperature equals the wet-bulb temperature. 
B) The relative humidity is nonetheless less than 100 percent. 
C) ​The air temperature is higher than the dew point temperature. 
D) ​An increase in temperature will cause condensation to occur. 
E) ​The temperature increases. 
A) The air temperature equals the wet-bulb temperature. 
B) The relative humidity is nonetheless less than 100 percent. 
C) ​The air temperature is higher than the dew point temperature. 
D) ​An increase in temperature will cause condensation to occur. 
E) ​The temperature increases.

Question 15

The average specific humidity is ____ in the warm,muggy tropics.As we move away from the tropics,it ____.​

Accepted Answer

A) lowest;increases 
B) highest;increases 
C) ​intermediate;decreases 
D) ​lowest;decreases 
E) ​highest;decreases 
A) lowest;increases 
B) highest;increases 
C) ​intermediate;decreases 
D) ​lowest;decreases 
E) ​highest;decreases

Question 16

Saturation is more likely to occur in cool air than in warm air.

Accepted Answer

A) True 
 B)False

Question 17

The instrument that measures humidity by measuring the amount of radiant energy absorbed by water vapor is the​

Accepted Answer

A) electrical hygrometer. 
B) infrared hygrometer. 
C) ​sling psychrometer. 
D) ​hair hygrometer. 
E) ​dew cell. 
A) electrical hygrometer. 
B) infrared hygrometer. 
C) ​sling psychrometer. 
D) ​hair hygrometer. 
E) ​dew cell.

Question 18

Why is perspiration an effective means of cooling human skin?

Accepted Answer

An appropriate Answer would be that evap

Question 19

The temperature difference between the dry bulb and the wet bulb is known as the ____.​

Accepted Answer

A) dry-bulb depression 
B) wet-bulb depression 
C) ​dry-bulb inclination 
D) ​wet-bulb inclination 
E) ​bulb depression 
A) dry-bulb depression 
B) wet-bulb depression 
C) ​dry-bulb inclination 
D) ​wet-bulb inclination 
E) ​bulb depression

Question 20

The lowest temperature that can be attained by evaporating water into the air is known as the​

Accepted Answer

A) heat index.​ 
B) minimum temperature. 
C) ​wet-bulb temperature. 
D) ​frost point. 
E) ​wind chill temperature. 
A) heat index.​ 
B) minimum temperature. 
C) ​wet-bulb temperature. 
D) ​frost point. 
E) ​wind chill temperature.

Condensation is most likely to happen when air and the speed of the water vapor molecules .

A strand of human hair is known to increase by 2.5 percent as the relative humidity increases from 0 to 100 percent.

The cycle of moving and transforming water molecules from liquid to vapor and back to liquid again is called the ____________________.

If the amount of water vapor in a descending atmospheric air parcel remains constant,the specific humidity also remains constant.

Under saturated conditions,for every molecule that evaporates,one must condense,and no net loss of liquid or vapor molecules results.

Which of the following is the BEST indicator of the actual amount of water vapor in the air?

As the air temperature increases,with no addition of water vapor to the air,the relative humidity will ____________________.

Microscopic bits of dust,smoke,salt,and other particles that commonly are mixed in with air molecules are called ___________________.

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

An enterprising travel agent trying to sell you a summer vacation package to Phoenix,Arizona,claims that the summertime relative humidity is above 90 percent.Can this be true? Explain.

Evaporative coolers are primarily used in climates where the summers are

What happens when air is saturated?

The average specific humidity is in the warm,muggy tropics.As we move away from the tropics,it .

Saturation is more likely to occur in cool air than in warm air.

The instrument that measures humidity by measuring the amount of radiant energy absorbed by water vapor is the

Why is perspiration an effective means of cooling human skin?

The temperature difference between the dry bulb and the wet bulb is known as the ____.

The lowest temperature that can be attained by evaporating water into the air is known as the

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

Tornadoes

Hurricanes

Earths Changing Climate

Global Climate

Air Pollution

Light Color and Atmospheric Optics

Filters

Exam 4: Atmospheric Humidity

Condensation is most likely to happen when air ____ and the speed of the water vapor molecules ____.​

A strand of human hair is known to increase by 2.5 percent as the relative humidity increases from 0 to 100 percent.

The cycle of moving and transforming water molecules from liquid to vapor and back to liquid again is called the ____________________.

If the amount of water vapor in a descending atmospheric air parcel remains constant,the specific humidity also remains constant.

Under saturated conditions,for every molecule that evaporates,one must condense,and no net loss of liquid or vapor molecules results.

Which of the following is the BEST indicator of the actual amount of water vapor in the air?​

As the air temperature increases,with no addition of water vapor to the air,the relative humidity will ____________________.

Microscopic bits of dust,smoke,salt,and other particles that commonly are mixed in with air molecules are called ___________________.

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

An enterprising travel agent trying to sell you a summer vacation package to Phoenix,Arizona,claims that the summertime relative humidity is above 90 percent.Can this be true? Explain.

Evaporative coolers are primarily used in climates where the summers are​

What happens when air is saturated?​

The average specific humidity is ____ in the warm,muggy tropics.As we move away from the tropics,it ____.​

Saturation is more likely to occur in cool air than in warm air.

The instrument that measures humidity by measuring the amount of radiant energy absorbed by water vapor is the​

Why is perspiration an effective means of cooling human skin?

The temperature difference between the dry bulb and the wet bulb is known as the ____.​

The lowest temperature that can be attained by evaporating water into the air is known as the​

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

Tornadoes

Hurricanes

Earths Changing Climate

Global Climate

Air Pollution

Light Color and Atmospheric Optics

Filters

Condensation is most likely to happen when air and the speed of the water vapor molecules .

Which of the following is the BEST indicator of the actual amount of water vapor in the air?

Evaporative coolers are primarily used in climates where the summers are

What happens when air is saturated?

The average specific humidity is in the warm,muggy tropics.As we move away from the tropics,it .

The instrument that measures humidity by measuring the amount of radiant energy absorbed by water vapor is the

The temperature difference between the dry bulb and the wet bulb is known as the ____.

The lowest temperature that can be attained by evaporating water into the air is known as the