When calculating the barometric pressure for a city located $200$ meters above sea level, would you (add or subtract) units to its barometric reading in order to correct its pressure to sea level? You would _____________ units to the barometric reading.

What two instruments are used to measure air pressure?

What is the normal barometric pressure at sea level under standard conditions?

What is standard sea-level pressure, in millibars (mb) and inches of mercury (in Hg)?

mb

in Hg

Briefly describe the two ways relative humidity can be changed. a. _____. b. _____.

Explain why the air in a cool basement is relatively humid (damp) in the summer.

Determine the pressure exerted on the surface of a submarine cruising 175 ft below the free surface of the sea. Assume that the barometric pressure is 14.7 psia and the specific gravity of seawater is 1.03.

The inset (left) in the figure illustrates the annual variability, or reliability, of annual precipitation in Africa. After you compare the inset to the annual precipitation map for Africa, summarize the relationship between the amount of precipitation an area receives and the variability or reliability of that precipitation.

The inset (left) in Figure 15.18 illustrates the annual variability, or reliability, of annual precipitation in Africa. After you compare the inset to the annual precipitation map for Africa, summarize the relationship between the amount of precipitation an area receives and the variability or reliability of that precipitation.

How many 150-mg aspirin tablets can be made from 15.0 kg of aspirin

Many homes are heated in the winter. What effect does heating have on the relative humidity inside the home? What can be done to lessen this effect?

Based on your answers to Question 3, complete the following statements. If the amount of water vapor in the air remains constant, does cooling the air raise or lower the relative humidity? When air temperature increases, does relative humidity increase or decrease?

Cooling __________ the relative humidity.

Relative humidity __________ when air temperature increases.

By referring to Table 15.2, determine the dew-point temperature of 1 kilogram of air that contains 7 grams of water vapor. Dew-point temperature=_______________C

Based on your answers to Question 1, complete the following statements. When air temperature remains constant, will adding water vapor increase or decrease relative humidity? How does relative humidity change when water vapor is removed from the air?

Adding water vapor will __________ relative humidity.

Reducing water vapor will __________ relative humidity.