Exam 4: Atmospheric Humidity

Which of the following factors mainly determines the temperature at which water boils?

Which of the following statements explains why night-time temperatures rarely drop below the dew-point temperature?

Explain why the statement "warm air can hold more water vapour molecules" is misleading and commonly misinterpreted. Suggest a better way to explain this concept.

When air temperature increases, which of the following happens to the saturation vapour pressure?

For the following questions refer to the temperature and dew point data in the following cities: -Which of the following statements about water vapour is correct?

Which of the following is the BEST indicator of the actual 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 procedures will increase the relative humidity in a home during the winter?

For the following questions refer to the temperature and dew point data in the following cities: -Suppose saturated polar air has an air temperature and dew point of -10ºC, and unsaturated desert air has an air temperature of 35ºC and a dew point of 10ºC. Which of the following describes the water vapour and relative humidity of desert air compared to polar air?

For the following questions refer to the temperature and dew point data in the following cities: -In which part of Canada are average summer dew point temperatures highest?

As the air temperature increases, with no addition of water vapour to the air, which of the following will happen to the dew point?

Explain why condensation is more likely to occur on a glass of water sitting on a table outdoors on a warm day as opposed to a cold day.

When comparing the water budgets from each of the following locations, on average which would have the lowest amount of runoff?

Even if the relative humidity of polar air is often close to 100 percent, explain why polar air is often described as dry.

Which of the following terms refers to the percentage of water vapour present in the air compared to that required for saturation?

When calculating a water budget for a Canadian location, in which of the following seasons does the actual evapotranspiration typically NOT keep pace with the potential evapotranspiration?

At 4ºC, the atmosphere is saturated with water vapour. If the air temperature increases to 15ºC, with no addition or removal of water vapour, what is the dew point?

Which of the following amounts is the water vapour pressure that occurs when water vapour comprises 3.5 percent of an air parcel whose total pressure is 100 kPa?

For the following questions refer to the temperature and dew point data in the following cities: -If very cold air is brought indoors and warmed with no change in its moisture content, which of the following will happen to the saturation vapour pressure of this air?