Question 1

By volume, nitrogen is the most abundant gas in the modern homosphere.

Accepted Answer

A) True 
 B)False

Question 2

Which of the following is correct regarding lapse rates in the troposphere?

Accepted Answer

A)  The term "normal (average) lapse rate" refers to the actual lapse rate in effect at any particular time. 
B)  The environmental lapse rate refers to the actual lapse rate at any particular time and may differ substantially from the normal lapse rate. 
C)  The normal lapse rate is always the same as the dry adiabatic rate (DAR). 
D)  Temperatures generally increase with altitude in the troposphere.

Question 3

Photochemical reactions produce

Accepted Answer

A)  principally sulfur dioxides. 
B)  particulates such as dust, dirt, soot, and ash. 
C)  ozone and peroxyacetyl nitrates (PAN). 
D)  carbon monoxide.

Question 4

Why is stratospheric ozone loss a concern?

Accepted Answer

A)  Stratospheric ozone is a major greenhouse gas; its loss will contribute to the cooling of the planet. 
B)  Stratospheric ozone absorbs harmful ultraviolet radiation (UVB and UV
C) . 
C)  Stratospheric ozone is a component of photochemical smog. 
D)  Stratospheric ozone contributes to the brilliant auroras.

Question 5

Natural rainfall primarily results from the interaction of water with

Accepted Answer

A)  carbon dioxide. 
B)  sulfur oxides. 
C)  nitrogen oxides. 
D)  PAN. 
E)  ozone.

Question 6

Why is the hole in the ozone greatest over Antarctica?

Accepted Answer

A)  The ozone hole is a natural phenomenon related to high polar stratospheric clouds. 
B)  South American countries have not ratified the Montreal Protocol and continue to release ozone-destroying CFCs. 
C)  Chlorine freed from CFCs elsewhere migrate to the Antarctic region, where they are trapped by the polar vortex. 
D)  Ozone, a greenhouse gas which traps ultraviolet energy radiated from the Earth's surface, has highest concentration in Antarctica.

Question 7

Anthropogenic air pollution is limited to urban areas.

Accepted Answer