Land Title: Environmental Science: Systems and Solutions, Fourth Edition Authors: Michael I. McKinney, Robert M. Schoch, Logan Yonavjak
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Practice Quizzes

Please read each question and select your answer from the choices provided. You must complete all of the questions in order to view your results.

1:  Which of the following is true about ozone?
A: Ozone is formed when UV light strikes water releasing highly reactive oxygen atoms.
B: Ozone acts as a shield by absorbing harmful UV-B rays.
C: Stratospheric ozone is the result of the incomplete combustion of fossil fuels.
D: Ozone is naturally formed only in the stratosphere.

2:  Which of the following statements about CFCs is true?
A: HCFCs are more harmful to the ozone layer than CFCs.
B: CFCs are highly reactive compounds in the troposphere.
C: CFCs can be removed from the atmosphere by rain.
D: It is released chlorine from a CFC that destroys ozone.

3:  Which of the following about ozone depletion is true?
A: Ozone depletion occurs more rapidly over the tropics than over the poles.
B: It appears that it is the industrialized countries that are responsible for ozone depletion.
C: Once CFCs have been phased out the ozone layer should immediately stop shrinking.
D: Ozone holes are formed only once every ten years over the Antarctic and once every twelve years over the arctic.

4:  Which of the following is true about controlling and regulating CFC use?
A: CFCs are dangerous only if released into the atmosphere.
B: Substituting HCFCs for CFCs can be done at no additional costs or modifications.
C: It is better to purchase clothes that need to be dry-cleaned rather than washed with detergent.
D: Pollution in the troposphere accelerates the damage performed by UV-B radiation.

5:  The best known greenhouse gas is
A: carbon dioxide.
B: oxygen.
D: methane.

6:  What is the primary way that humans are increasing CO2 concentrations in the atmosphere?
A: more people, more exhaling CO2
B: deforestation
C: burning fossil fuels
D: production of carbonated soft drinks

7:  The biggest contributor to increased CO2 emissions in the world is
A: the U.S.
B: the former Soviet Union.
C: China.
D: Japan.

8:  Which of the following is the most potent greenhouse gas per molecule?
A: ozone
B: methane
C: CO2

9:  Which of the following is true?
A: As air pollution decreases, the greenhouse effect may accelerate.
B: Greenhouse gases may be responsible for "Little Ice Ages."
C: Atmospheric CO2 concentrations are higher today than at any other time in world history.
D: The world's oceans contribute to the greenhouse effect by giving up CO2 exhaled by marine animals.

10:  Which of the following effects of global warming is probably true?
A: All areas of the world should experience a slight to great increase in average temperatures.
B: Much of the tropical areas will become desert.
C: Increased global precipitation will probably not result in increased food production.
D: Ocean temperatures should not be affected and thus ocean currents should remain stable.

11:  If the risk of developing skin cancer increases by one percent for every six miles closer to the equator one lives, what would be the increased risk of moving from New York to Miami (a distance of 1,280 miles)?
A: 128 percent
B: 213 percent
C: 282 percent
D: 343 percent

12:  Coral bleaching is caused by
A: destruction of tissue pigments by increased sea water temperature.
B: expulsion of symbiotic algae from coral tissues
C: coral disease
D: covering of corals with sediment

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Link: Jones and Bartlett Publishers