____ 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 |