Department of Natural Sciences
Clayton College & State University
Morrow, Georgia

March 19, 2009

SCI 1901E - Quiz 12

Name __________SOLUTION_____________

(05)     1.    The automobile engine produces a number of air pollutants.  List the name of th air pollutant that is reduced by the following measures:

a.         Decreasing the fuel to air ratio.

                                 carbon monoxide (CO)

b.         Positive crankcase ventilation.

                                 volatile organic compounds (VOCs)

c.         Lowering the combustion temperature.

                                 nitrogen oxides (NO_x)

d.         Removing pollutants (two of them) with the catalytic converter.

                                 carbon monoxide (CO) and volatile organic compounds (VOCs)

(02)     2.         Which two pollutants are required for the production of photochemical smog?

a.        nitrogen oxides (NO_x)

b.        volatile organic compounds (VOCs)   

(04)     3.         Describe the mechanism that causes the greenhouse effect as it applies to global warming.

                        Sunlight penetrating the atmosphere is partially absorbed by the Earth, heating its surface.  The Earth then radiates     
                        electromagnetic energy in the infrared portion of the spectrum.  Some of this radiation is readily absorbed by
                        greenhouse gases, which reradiate energy back to the Earth, increasing the surface temperature.

(04)     4.         List the four principal greenhouse gases.

a.    carbon dioxide (CO₂)
 

b.    methane (CH₄)
 

c,    nitrous oxide (N₂O)
 

d.    chlorofluorocarbons (CFCs)