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WEAX WX 301 EXAM 1 ACTUAL QUESTIONS AND ANSWERS 100% CORRECT
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WEAX WX 301 EXAM 1 ACTUAL QUESTIONS AND ANSWERS 100% CORRECT
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ESTUDYWEAX WX 301 EXAM 1 ACTUAL QUESTIONS
AND ANSWERS 100% CORRECT
1. The average concentrations of O2 and N2 in the atmosphere are:
o A) 25% and 75%
o B) 21% and 78%
o C) 50% and 50%
o D) 30% and 70%
✔✔ Answer: B) 21% and 78%
2. Average sea level pressure is approximately:
o A) 950 mb, 12 lb/in², 28.92 in Hg
o B) 1000 mb, 13 lb/in², 29.00 in Hg
o C) 1013 mb, 14 lb/in², 29.92 in Hg
o D) 1050 mb, 15 lb/in², 30.10 in Hg
✔✔ Answer: C) 1013 mb, 14 lb/in², 29.92 in Hg
3. The pressure 500 mb is equal to how many Pascals?
o A) 100,000 Pa
o B) 10,000 Pa
o C) 50,000 Pa
o D) 500 Pa
✔✔ Answer: C) 50,000 Pa
4. Which of the following does NOT occur when a column of air is heated?
o A) Air expands
o B) Pressure decreases with height at a slower rate
o C) Air becomes less dense
o D) Pressure decreases with height at a faster rate
✔✔ Answer: D) Pressure decreases with height at a faster rate
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,ESTUDY
5. The height above sea level at which the pressure is 700 mb is approximately:
o A) 10,000 ft
o B) 15,000 ft
o C) 5,000 ft
o D) 20,000 ft
✔✔ Answer: A) 10,000 ft
6. The pressure at 30,000 ft is approximately:
o A) 200 mb
o B) 300 mb
o C) 400 mb
o D) 500 mb
✔✔ Answer: B) 300 mb
7. The station level pressure for PHX is 28.9 in Hg at an elevation of 1200 ft. The MSL pressure
there is about:
o A) 29.1 in Hg
o B) 30.1 in Hg
o C) 31.1 in Hg
o D) 32.1 in Hg
✔✔ Answer: B) 30.1 in Hg
8. Cooling air at constant pressure will:
o A) Decrease density
o B) Increase density
o C) Have no effect on density
o D) Increase volume
✔✔ Answer: B) Increase density
9. Heating a parcel of air at constant pressure will make it _________ dense than the
surrounding air. The parcel will then:
o A) Less, sink
o B) Less, rise
o C) More, rise
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o D) More, sink
✔✔ Answer: B) Less, rise
10. If I heat air in a closed container, the pressure inside the container will:
A) Decrease
B) Stay the same
C) Rise
D) Collapse
✔✔ Answer: C) Rise
11. In the International Standard Atmosphere (ISA), the lapse rate in the troposphere is closest
to:
A) 5°C per 1000 ft
B) 1°C per 1000 ft
C) 2°C per 1000 ft
D) 10°C per 1000 ft
✔✔ Answer: C) 2°C per 1000 ft
12. Pressure decreases with height faster in a ______ column:
A) Hot
B) Cold
C) Neutral
D) Stable
✔✔ Answer: B) Cold
13. A warm column of air has ______ than normal pressure aloft and ______ than normal
pressure near the surface:
A) Higher, lower
B) Lower, higher
C) Normal, lower
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