Atmospheric Pressure Questions

1. An air pressure of 1023 millibars is equal to how many inches of mercury?

30.10
30.15
30.19
30.21

2. An air pressure of 30.15 inches of mercury is equal to

1017 mb
1019 mb
1021 mb
1023 mb

3. A barometer indicates a pressure of 30 inches of mercury at sea level. At 3.5 miles above sea level it indicates a pressure of 15 inches. What is the best conclusion you can draw from these data?

Humidity affects air pressure
Temperature affects air pressure
Of the total mass of air, about 99% is within 3.5 miles of sea level
Of the total mass of air, about 50% is within 3.5 miles of sea level

4. One atmosphere of pressure is about

1013.1 mb
29.90 inches
1013 inches
29.50 mb

5. A pressure of 28.73 inches of mercury is equal to

972.0 mb
972.1 mb
973.0 mb
974.0

6. Which is the highest pressure?

980.5 mb
28.82 inches
973.6 mb
28.97 inches

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