Exam 4: Atmospheric Humidity

Exhibit 4-1 The following four questions refer to the temperature and dew point data in the following cities: -Refer to Exhibit 4-1.Which city has the HIGHEST saturation vapor pressure?

The relative humidity is often near 100 percent in the polar regions.

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.

Why is perspiration an effective means of cooling human skin?

The percentage of water vapor present in the air compared to that required for saturation is the

With which set of conditions below would you expect wet laundry hanging outdoors on a clothesline to dry most quickly?

With the aid of a figure,illustrate and describe the circulation of water in the atmosphere (the hydrologic cycle).

The temperature to which air must be cooled in order to become saturated is the

The ratio of the mass of water vapor in a given volume (parcel)of air to the mass of the remaining dry air describes the

If a glass of water was surrounded by saturated air,

As the air temperature increases,the air's capacity for water vapor

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

Ignoring the contributions of wind,a baseball would be expected to travel farther in warm,humid air because

Describe how a sling psychrometer can be used to determine the relative humidity or dew point.

The Gulf Coast states are more humid in summer than the coastal areas of Southern California mainly because of the

As the difference between the air temperature and the dew point increases,the relative humidity

Exhibit 4-1 The following four questions refer to the temperature and dew point data in the following cities: -Refer to Exhibit 4-1.Which city has the GREATEST amount of water vapor in the air?

At 40°F,the atmosphere is saturated with water vapor.If the air temperature increases to 60°F,with no addition or removal of water vapor,one may conclude that the dew point is about

At what time of day is the relative humidity normally at a minimum?

Explain why,at temperatures below freezing,the saturation vapor pressure over water is greater than the saturation vapor pressure over ice.