Exam 4: Atmospheric Humidity

For the following questions refer to the temperature and dew point data in the following cities: -Which of the following describes how much of the world's supply of precipitation is equivalent to the total mass of water vapour stored in the atmosphere at any moment?

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

On which of the following does saturation vapour pressure depend?

Describe the hydrologic cycle and draw a diagram to illustrate the circulation of water in the atmosphere.

-Which city has the least 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 is the name for the lowest temperature that can be attained by evaporating water into the air?

Which of the following gives the main reason why eastern Canada is more humid in summer than the Canadian coastal areas of the Pacific?

For the following questions refer to the temperature and dew point data in the following cities: -In a blinding snowstorm in Whitehorse, the air temperature and dew point temperature are both -1ºC. Meanwhile, under clear skies in Toronto, the air temperature is 29ºC and the dew point temperature is 3ºC. Which of the following can be concluded from this information?

For the following questions refer to the temperature and dew point data in the following cities: -Which of the following instruments uses wet-bulb and dry-bulb temperature to obtain relative humidity?

Which of the following describes the saturation vapour pressure over water when the air temperature is below freezing?

For the following questions refer to the temperature and dew point data in the following cities: -A baseball hit nearly 100 metres on a hot, humid day will travel about what percentage of the same distance on a hot, dry day?

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 city has the highest relative humidity?

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

For the following questions refer to the temperature and dew point data in the following cities: -Consider the situation where the air temperature in a room is 21ºC, the saturation vapour pressure is 25 hPa, the dew point temperature is 7ºC, and the actual vapour pressure is 10 hPa. Which of the following is the relative humidity?

At which of the following times of day is the relative humidity normally at a minimum?

For the following questions refer to the temperature and dew point data in the following cities: -Which of the following occurs when a glass of water is surrounded by saturated air?

At which of the following times of day does the relative humidity usually reach a maximum value?

Explain why high humidity in the summer makes us feel warmer than the air temperature suggests.

How can you heat air without decreasing its relative humidity?