Exam 4: Atmospheric Humidity

For the following questions refer to the temperature and dew point data in the following cities: -Without any addition or removal of water vapour, what happens to the actual vapour pressure when the air temperature increases?

For the following questions refer to the temperature and dew point data in the following cities: -Which of the following changes happens to the humidity if the amount of water vapour in the atmosphere remains constant?

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

Does lowering the temperature in your home during the winter cause the relative humidity to increase or decrease? Why? What physiological effects might you experience during both humid and dry conditions?

Which of the following statements describes what occurs when the air temperature remains constant and water is evaporated into the air?

For the following questions refer to the temperature and dew point data in the following cities: -Which of the following is used to directly measure the relative humidity?

If very cold air is brought indoors and warmed with no change in its moisture content, which of the following will happen to the relative humidity of this air?

Which of the following terms refers to the temperature to which air must be cooled in order to become saturated?

For the following questions refer to the temperature and dew point data in the following cities: -As the difference between the air temperature and the dew point increases, which of the following happens to the relative humidity?

For the following questions refer to the temperature and dew point data in the following cities: -Suppose the dew point of cold outside air is the same as the dew point of the indoor air. If the door is opened and cold air replaces some of the warm air, what is the new relative humidity indoors?

People who wear glasses know that when they enter a warm building after being outdoors in subfreezing temperatures, condensation occurs on the lenses of their glasses. Why doesn't condensation occur on the lenses when they go outside after a lengthy stay inside the warm building?

-Which of the following is the measure of the total amount of water vapour in the air?

For the following questions refer to the temperature and dew point data in the following cities: -Which of the following instruments measures humidity by measuring the amount of radiant energy absorbed by water vapour?

In order to reduce evaporation and conserve water, is it better to water a lawn in the early morning or early evening? Explain why.

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

For the following questions refer to the temperature and dew point data in the following cities: -Ignoring the contributions of wind, which of the following statements explains why a baseball can be expected to travel farther in warm, humid air?

For the following questions refer to the temperature and dew point data in the following cities: -A humidex reading over which of the following values is considered dangerous?

For the following questions refer to the temperature and dew point data in the following cities: -During the winter, which of these factors leads to the irritation of the mucus membranes in the nose and throat?

As air temperature increases, which of the following happens to the air's capacity for water vapour?

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