Question 1

What does air consist of?

Accepted Answer

A) A mixture of gases that behaves as if it were a single gas. 
B) Gases that are not well mixed. 
C) Oxygen only. 
D) Mostly carbon dioxide and water vapour.

Question 2

Natural sources produce greater quantities of air pollutants than do sources attributable to humans.

Accepted Answer

A) True 
 B)False

Question 3

Temperature inversions have little effect on air pollution.

Accepted Answer

A) True 
 B)False

Question 4

Which of the following is true regarding ozone depletion in Antarctica?

Accepted Answer

A) Increasing levels of ultraviolet radiation have not actually been measured at this time. 
B) The atmosphere above Antarctica has experienced a complete loss of protective ozone. 
C) Maximum ozone depletion occurs during the Antarctic spring,following the development of polar stratospheric clouds in winter. 
D) There has actually been a decrease in ultraviolet levels measured at the surface-which is contrary to what is predicted by ozone depletion models.

Question 5

Which of the following statements lists a fact about ozone?

Accepted Answer

A) Ozone in the stratosphere leads to global warming. 
B) Ozone in the lower atmosphere protects human health. 
C) Stratospheric ozone emits harmful radiation. 
D) Tropospheric ozone is a component of photochemical smog.

Question 6

How are the gases in the heterosphere arranged and why?

Accepted Answer

A) They are well mixed because of thermal motions (i.e.,convection). 
B) They are well mixed due to the influence of gravity which causes gases of different weight to diffuse randomly. 
C) They are poorly mixed as a result of thermal motions (i.e.,convection). 
D) They are poorly mixed due to the influence of gravity which causes gases of different weight to separate into layers.

Question 7

Which of the following best describes conditions in the mesosphere?

Accepted Answer

A) Temperatures rapidly increase with altitude in the mesosphere. 
B) High altitude noctilucent clouds form in the mesosphere. 
C) The mesosphere is completely within the heterosphere. 
D) The mesosphere is located between the troposphere and the stratosphere.

Question 8

Scientists predict that air quality will continue to improve even without emissions regulations.

Accepted Answer

A) True 
 B)False

Question 9

Severe pollution conditions tend to develop during periods of low pressure systems.

Accepted Answer

A) True 
 B)False

Question 10

Which of the following is true regarding acid deposition?

Accepted Answer

A) Acids have been causally linked to fish kills in the northeastern North America. 
B) Acid precipitation is precipitation that measures more than 7.0 on a pH scale. 
C) No lakes or streams have been damaged by acid precipitation. 
D) Soil processes generally are not affected by acid precipitation.

Question 11

Both nitrogen dioxide and sulfur dioxide are principally produced by automobiles.

Accepted Answer

A) True 
 B)False

Question 12

List and describe the four main gases of the homosphere.Which is least important to life?

Accepted Answer

The answer of List and describe the four main gases...

Question 13

Atmospheric pressure decreases with altitude.

Accepted Answer

A) True 
 B)False

Question 14

Why are temperature inversion noteworthy with respect to air pollution?

Accepted Answer

A) Mesospheric conditions are replicated in the troposphere. 
B) Vertical mixing of pollutants is halted,trapping the pollutants under the inversion layer. 
C) Surface pollution is moderated by allowing surface air to mix with the air above. 
D) Air pollution is completely inhibited from forming.

Question 15

Despite the thermosphere's high temperature,the density of molecules is so low little actual heat is produced.

Accepted Answer

A) True 
 B)False

Question 16

Political leaders in the United States worked swiftly to pass legislation banning CFCs.

Accepted Answer

A) True 
 B)False

Question 17

Which is true of the amount of CO2 in our atmosphere?

Accepted Answer

A) CO2 is the most abundant gas in the atmosphere. 
B) The level of CO2 has been decreasing at the rate of 3.1% per year since 2000. 
C) The level of CO2 increased at the rate of 1.1% per year from 1990 to 1999. 
D) The level of CO2 has been much higher during the past 800,000 years than it is now.

Question 18

Which atmospheric zone supports the biosphere and is the region of principle weather activity?

Accepted Answer

A) Thermosphere. 
B) Mesosphere. 
C) Stratosphere. 
D) Troposphere.

Question 19

Because percentage of carbon dioxide in the atmosphere is so small,it is considered an insignificant gas.

Accepted Answer

A) True 
 B)False

Question 20

What human health effect is related to CO levels of 100 ppm or less in the bloodstream?

Accepted Answer

A) Humans might develop a headache and have losses in vision and judgment. 
B) There is no noticeable health effect. 
C) The human bloodstream is unaffected. 
D) Carbon monoxide can cause lower limb paralysis.

Exam 3: Earths Modern Atmosphere

What does air consist of?

Natural sources produce greater quantities of air pollutants than do sources attributable to humans.

Temperature inversions have little effect on air pollution.

Which of the following is true regarding ozone depletion in Antarctica?

Which of the following statements lists a fact about ozone?

How are the gases in the heterosphere arranged and why?

Which of the following best describes conditions in the mesosphere?

Scientists predict that air quality will continue to improve even without emissions regulations.

Severe pollution conditions tend to develop during periods of low pressure systems.

Which of the following is true regarding acid deposition?

Both nitrogen dioxide and sulfur dioxide are principally produced by automobiles.

List and describe the four main gases of the homosphere.Which is least important to life?

Atmospheric pressure decreases with altitude.

Why are temperature inversion noteworthy with respect to air pollution?

Despite the thermosphere's high temperature,the density of molecules is so low little actual heat is produced.

Political leaders in the United States worked swiftly to pass legislation banning CFCs.

Which is true of the amount of CO2 in our atmosphere?

Which atmospheric zone supports the biosphere and is the region of principle weather activity?

Because percentage of carbon dioxide in the atmosphere is so small,it is considered an insignificant gas.

What human health effect is related to CO levels of 100 ppm or less in the bloodstream?