GEOG1900 - Practice Exam Questions With Answers
Which of the following are true?
A.Vertical pressure gradients are similar to horizontal pressure gradients.
B.Vertical pressure gradients are slightly greater than horizontal pressure
gradients.
C.Horizontal pressure gradients are slightly greater than vertical pressure
gradients.
D.Vertical pressure gradients are very much greater than changes in
horizontal pressure. Correct Ans - D
Which of the following is true?
A.Surface pressure is always greater than the sea level pressure.
B.Surface pressure is always equal to sea level pressure.
C.Sea level pressure is always greater than surface pressure.
D.Surface pressure is almost always lower than sea level pressure. Correct
Ans - D
3.Cyclones:
A.experience Coriolis effects that deflect air to the right in the
SouthernHemisphere.
B.are associated with low-pressure systems.
C.are associated with supergeostrophic winds.
D.are typically regions of fair weather. Correct Ans - B
4.Height maps for the United States:
A.are updated twice a week.
B.correspond to different approximate elevation levels.
C.are done for 500 mb only
D.have little practical application in weather forecasting. Correct Ans - B
5.This occurs around a high-pressure system when the Coriolis effect exceeds
the pressure gradient force, causing air to turn:
A.subgeostrophic flow.
B.geostrophic flow
C.supergeostrophic flow.
D.non-gradient flow. Correct Ans - C
6.A geostrophic wind:
,A.follows the pressure gradient force.
B.curves around to flow toward its original source.
C.flows perpendicular to the pressure gradient force.
D.is usually not affected by the Coriolis force. Correct Ans - C
7.Gradient flow:
A.undergoes constant acceleration.
B.is a geostrophic wind.
C.occurs when wind flows parallel to the pressure gradient.
D.maintains the same direction. Correct Ans - A
8.The Coriolis force:
A.is constant.
B.affects the direction of motion.
C.affects the speed of motion.
D.is caused by pressure gradient forces. Correct Ans - B
9.Upper-level pressure height charts are produced how many times a day by
the NationalWeather Service?A.One.
B.Two.
C.Three.
D.Four. Correct Ans - B
10.Which of the following measure wind direction and speed?A.Aerovane.
B.Anemometer.
C.Wind vane.
D.All of the above. Correct Ans - A
11.Regarding isobars, it is true that:
A.their spacing indicates the strength of the pressure gradient.
B.they are drawn at 10 mb intervals in the United States.
C.they depict areas having the same barometer reading.
D.you will not find them on Canadian pressure charts. Correct Ans - A
12.What is average sea-level pressure in pounds per square inch?A.14.7
B.101.3
C.1.47
D.1013.22 Correct Ans - A
, 13.Hydrostatic equilibrium occurs when:
A.the force of gravity and the vertical pressure gradient both act to push air
upward.
B.the force of gravity and the vertical pressure gradient both act to push
airdownward.
C.the force of gravity and the vertical pressure gradient have equal value and
oppose each other.
D.large air masses are moving either up or down. Correct Ans - C
14.The Coriolis force would be strongest on a(n):
A.supersonic jet.
B.baseball pitcher's 100 mile-per-hour fastball.
C.flock of Canada geese migrating north.
D.alien spaceship the size of New York City that is flying above a north-
boundfreeway at the speed of traffic. Correct Ans - A
15.The effect of friction on air:
A.increases wind speed.
B.is relevant only within the planetary boundary layer.
C.causes airflow to cross isobars rather than run parallel to them.
D.increases the Coriolis force.
E.increases with height. Correct Ans - B
16.The Equation of State (Ideal Gas Law) gives a relationship between:
A.pressure and wind speed.
B.pressure, temperature, and density.
C.pressure, density, and temperature.
D.pressure, moisture content, and density.
E.none of the above. Correct Ans - C
17.The free atmosphere lies above what height?
A.0.5 mile.
B.1 mile.
C.1.5 miles.
D.3 miles. Correct Ans - B
18.According to Newton's Laws, an air parcel can accelerate:
A.by speeding up.
B.by slowing down.
Which of the following are true?
A.Vertical pressure gradients are similar to horizontal pressure gradients.
B.Vertical pressure gradients are slightly greater than horizontal pressure
gradients.
C.Horizontal pressure gradients are slightly greater than vertical pressure
gradients.
D.Vertical pressure gradients are very much greater than changes in
horizontal pressure. Correct Ans - D
Which of the following is true?
A.Surface pressure is always greater than the sea level pressure.
B.Surface pressure is always equal to sea level pressure.
C.Sea level pressure is always greater than surface pressure.
D.Surface pressure is almost always lower than sea level pressure. Correct
Ans - D
3.Cyclones:
A.experience Coriolis effects that deflect air to the right in the
SouthernHemisphere.
B.are associated with low-pressure systems.
C.are associated with supergeostrophic winds.
D.are typically regions of fair weather. Correct Ans - B
4.Height maps for the United States:
A.are updated twice a week.
B.correspond to different approximate elevation levels.
C.are done for 500 mb only
D.have little practical application in weather forecasting. Correct Ans - B
5.This occurs around a high-pressure system when the Coriolis effect exceeds
the pressure gradient force, causing air to turn:
A.subgeostrophic flow.
B.geostrophic flow
C.supergeostrophic flow.
D.non-gradient flow. Correct Ans - C
6.A geostrophic wind:
,A.follows the pressure gradient force.
B.curves around to flow toward its original source.
C.flows perpendicular to the pressure gradient force.
D.is usually not affected by the Coriolis force. Correct Ans - C
7.Gradient flow:
A.undergoes constant acceleration.
B.is a geostrophic wind.
C.occurs when wind flows parallel to the pressure gradient.
D.maintains the same direction. Correct Ans - A
8.The Coriolis force:
A.is constant.
B.affects the direction of motion.
C.affects the speed of motion.
D.is caused by pressure gradient forces. Correct Ans - B
9.Upper-level pressure height charts are produced how many times a day by
the NationalWeather Service?A.One.
B.Two.
C.Three.
D.Four. Correct Ans - B
10.Which of the following measure wind direction and speed?A.Aerovane.
B.Anemometer.
C.Wind vane.
D.All of the above. Correct Ans - A
11.Regarding isobars, it is true that:
A.their spacing indicates the strength of the pressure gradient.
B.they are drawn at 10 mb intervals in the United States.
C.they depict areas having the same barometer reading.
D.you will not find them on Canadian pressure charts. Correct Ans - A
12.What is average sea-level pressure in pounds per square inch?A.14.7
B.101.3
C.1.47
D.1013.22 Correct Ans - A
, 13.Hydrostatic equilibrium occurs when:
A.the force of gravity and the vertical pressure gradient both act to push air
upward.
B.the force of gravity and the vertical pressure gradient both act to push
airdownward.
C.the force of gravity and the vertical pressure gradient have equal value and
oppose each other.
D.large air masses are moving either up or down. Correct Ans - C
14.The Coriolis force would be strongest on a(n):
A.supersonic jet.
B.baseball pitcher's 100 mile-per-hour fastball.
C.flock of Canada geese migrating north.
D.alien spaceship the size of New York City that is flying above a north-
boundfreeway at the speed of traffic. Correct Ans - A
15.The effect of friction on air:
A.increases wind speed.
B.is relevant only within the planetary boundary layer.
C.causes airflow to cross isobars rather than run parallel to them.
D.increases the Coriolis force.
E.increases with height. Correct Ans - B
16.The Equation of State (Ideal Gas Law) gives a relationship between:
A.pressure and wind speed.
B.pressure, temperature, and density.
C.pressure, density, and temperature.
D.pressure, moisture content, and density.
E.none of the above. Correct Ans - C
17.The free atmosphere lies above what height?
A.0.5 mile.
B.1 mile.
C.1.5 miles.
D.3 miles. Correct Ans - B
18.According to Newton's Laws, an air parcel can accelerate:
A.by speeding up.
B.by slowing down.
