____    2.         The smoke in London smogs came primarily from:

a.

exhaust from diesel engines

b.

trash fires

c.

factories in Eastern Europe

d.

coal combustion

 

 

____    3.         Collectively, particles of soot, smoke, dust and pollen are called:

a.

hydrocarbons

b.

aerosols

c.

carcinogens

d.

haze

 

 

____    4.         Which of the following gases will replace oxygen in blood hemoglobin and thereby reduce the transport of oxygen to the brain?

a.

sulfur dioxide (SO2)

b.

carbon monoxide (CO)

c.

carbon dioxide (CO2)

d.

methane (CH4)

 

 

____    5.         A primary component of photochemical smog is:

a.

ozone

b.

carbon monoxide

c.

sulfur dioxide

d.

chlorofluorocarbons

 

 

 

 

____    7.         A mixing layer is characterized by:

a.

enhanced vertical air motions

b.

suppressed vertical air motions

c.

strong horizontal winds

d.

high concentrations of pollutants

 

 

____    8.         Which of the following conditions would act to prevent a buildup of pollutants near the surface?

a.

light surface winds

b.

a strong subsidence inversion

c.

a large, slow-moving anticyclone

d.

a deep mixing layer

 

 

____    9.         Atmospheric stagnation is a condition normally brought on by:

a.

thunderstorms

b.

slow-moving anticyclones

c.

overcast skies

d.

tall buildings in a city

e.

movement of an upper level trough overhead

 

 

____    10.       Sunshine in a city is typically less intense than in surrounding rural areas because:

a.

of the higher pollution levels in cities

b.

of the air temperature in cities

c.

tall structures in cities block our view of the horizon

d.

cement and asphalt in cities absorb a larger percentage of the incident sunshine

 

 

____    11.       On clear, cold winter nights, cities tend to cool ____ than rural areas and have ____ temperatures.

a.

more slowly, higher

b.

more quickly, higher

c.

more slowly, lower

d.

more quickly, lower

 

 

____    12.       Rain with a pH of 5.6 would be considered:

a.

acidic

b.

alkaline

c.

neutral

d.

polluted

e.

harmful

 

 

____    13.       The ozone hole is found in this atmospheric layer:

a.

thermosphere

b.

troposphere

c.

stratosphere

d.

ionosphere

e.

mesosphere

 

 

____    14.       If the concentration of ozone were to decrease significantly, which of the following might also occur?

a.

less absorption of ultraviolet radiation in the stratosphere.

b.

an increase in the number of cases of skin cancer

c.

the stratosphere would cool

d.

more ultraviolet radiation would be absorbed at the earth's surface

e.

all of the above