Question 1

What are some of the possible consequences of global warming?

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Question 2

Assume that you have 100 years of continuous temperature records from your local weather service office.Discuss some of the difficulties you might have trying to determine whether average temperatures have increased during this period.

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Question 3

Where is the Sahel located? Is this a region of scarce,variable or abundant rainfall? Describe the biogeophysical feedback mechanism whereby a reduction in surface vegetation might cause a reduction in precipitation amounts.

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Question 4

Describe one positive and one negative feedback mechanism associated with human health or the human body.

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Question 5

In what ways might global warming benefit the planet?

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Question 6

What combination of the earth's orbital eccentricity,and precession and obliquity of the earth's axis would produce hottest summer temperatures in the Northern Hemisphere?

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Question 7

Does deforestation act to increase or decrease atmospheric carbon dioxide concentrations?

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Question 8

Discuss the changes that occur in the earth's orbit and orientation of the earth in its orbit.Over what time scales do these different changes occur?

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Question 9

Carbon dioxide concentrations in the atmosphere have been increasing steadily since the beginning of the industrial revolution and may double before the end of the current century.Why is this of concern?

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Question 10

In addition to carbon dioxide,what other gases may contribute to the problem of global warming? Why might global warming lead to an increase in global cloudiness? What possible effects would increased cloudiness have on global warming?

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Quiz 15: The Earths Changing Climate