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Multiple Choice Quiz
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1
An airplane flying at 35,000 feet is above what percent of the earth's atmosphere?
A)50%
B)75%
C)90%
D)99%
2
Normal atmospheric pressure is enough to support a column of mercury approximately
A)29.9 cm high.
B)76.0 cm high.
C)101 cm high.
D)760 cm high.
3
Your ears "pop" when an unpressurized plane climbs higher because
A)air is moving from the outside into your eardrum.
B)air is moving from your eardrum to the outside.
C)the air pressure in the plane decreases.
D)the fluid in your Eustachian tubes exerts pressure on your eardrums.
4
Nearly 1400 watts/meter2 of solar energy reaches the outermost atmosphere of the earth. What fraction of this energy on average actually reaches the surface?
A)20%
B)33%
C)50%
D)67%
5
The majority of the sun's radiation output occurs as
A)yellow light.
B)ultraviolet light.
C)infrared radiation.
D)gamma radiation.
6
The greenhouse effect results in warmer temperatures near the surface because
A)clouds trap infrared radiation near the surface.
B)some of the energy that would ordinarily escape is re-radiated toward the surface.
C)carbon dioxide and water vapor trap infrared radiation.
D)carbon dioxide molecules do not permit radiation to escape.
7
The interaction between ultraviolet light and ozone that protects life on the surface takes place in the
A)troposphere.
B)stratosphere.
C)exosphere.
D)ozonosphere.
8
On a clear, calm night, you would expect the air in the bottom of a valley to be
A)cooler than that on a hillside.
B)warmer than the air on a hillside.
C)less dense than that in surrounding areas.
D)the same temperature as that in surrounding areas.
9
Hot air rising from the equatorial regions eventually cools and descends to form
A)a belt of moist, low-pressure air.
B)a belt of dry, high-pressure air.
C)the jet stream.
D)a Chinook.
10
How does the average amount of water that returns to the oceans by precipitation compare to the water that leaves by evaporation?
A)Evaporation is greater than precipitation.
B)Precipitation and evaporation are equal.
C)Precipitation is greater than evaporation.
D)There is no pattern that can be generalized.
11
Which of the following is not considered to be a form of precipitation?
A)rain
B)dew
C)snow
D)hail
12
When water vapor in the atmosphere condenses to liquid water,
A)dew falls to the ground.
B)it rains or snows
C)a cloud forms.
D)all of these are correct.
13
Which cloud type is usually associated with the arrival of a cold front?
A)high, thin cirrus
B)towering cumulus
C)low stratus
D)any of these
14
A warm front forms when
A)a cold air mass displaces warmer air.
B)masses of cold air and warm air move past one another in opposite directions.
C)the suns warms a stationary cold air mass.
D)a warm air mass advances over a mass of cooler air.
15
A cyclone is centered about a
A)region of low pressure.
B)region of high pressure.
C)cold front.
D)occluded front.
16
Longer periods of drizzle, rain or snow are usually associated with which cloud type?
A)stratus
B)cumulus
C)cirrus
D)None of these are correct.
17
A condition that lifts a parcel of air to form cumulus clouds is
A)differential heating.
B)mountain barriers.
C)a cold front.
D)any of these.
18
Brief periods of showers are usually associated with which cloud type?
A)stratus
B)cumulus
C)cirrus
D)None of these.
19
Most of the great deserts in the world are located
A)near the equator.
B)30° north or south latitude.
C)60° north or south latitude.
D)deserts can be found at any latitude.
20
The characteristics of ocean waves are influenced by
A)wind speed.
B)length of time the wind blows.
C)the distance over which the wind had been in contact with the ocean water.
D)all of these.
21
A current that moves northeastward across the Atlantic is called the
A)Labrador current.
B)Gulf Stream.
C)California current.
D)equatorial current.





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