Question 1

Of the following anthropogenic methane (CH4) sources,which is the largest?

Accepted Answer

A)  Livestock.
B)  Wastewater treatment.
C)  Agriculture associated fires.
D)  Rice paddies.

Question 2

Which is a graph that plots monthly averages of CO2 concentrations since 1958?

Accepted Answer

A)  PETM.
B)  Younger Dryas.
C)  Keeling Curve.
D)  MCA.

Question 3

Sea surface temperatures increased at an average annual rate of 0.07 C° from 1901 to 2012.

Accepted Answer

A) True 
 B)False

Question 4

Some climate feedback loops,such as CO2 weathering feedback,occur over very long time scales.

Accepted Answer

A) True 
 B)False

Question 5

Which of the following is a stated ancillary benefit of reducing greenhouse gas emissions?

Accepted Answer

A)  Deterioration of air quality.
B)  Increase in renewable and sustainable energy development.
C)  Greater dependence on imported oil.
D)  Elimination of all oil tanker spills.

Question 6

With which does the IPCC Fifth Assessment Report conclude?

Accepted Answer

A)  That while climate change is occurring,it is largely natural climate fluctuations.
B)  It is highly doubtful that recent climate trends represent anything more than a temporary perturbation in the long term climate signal.
C)  Humans are likely (95% certainty) responsible for the temperature increase from 1951 to 2010.
D)  There is no consensus on recent climate trends; some maintain it is mostly human-caused,others maintain it is natural fluctuations.

Question 7

A definitive link between climate change and extreme weather events has been established.

Accepted Answer

A) True 
 B)False

Question 8

Which is the most abundant greenhouse gas in the atmosphere of Earth?

Accepted Answer

A)  Carbon dioxide (CO2) .
B)  Methane (CH4) .
C)  Water vapour (H2O) .
D)  Nitrous oxide (N2O) .

Question 9

The United States leads the world in total carbon dioxide (CO2)emissions.

Accepted Answer

A) True 
 B)False

Question 10

The rate of population growth decreased after 1950.

Accepted Answer

A) True 
 B)False

Question 11

Ice cores provide a climate record for how many past years?

Accepted Answer

A)  800 000.
B)  2 million.
C)  10 million.
D)  70 million.

Question 12

To which do scientists primarily attribute the recent rise in atmospheric concentrations of nitrous oxide (N2O) ?

Accepted Answer

A)  Automobile combustion.
B)  Agricultural activity.
C)  Wastewater management.
D)  Industrial practices.

Question 13

The exoskeletons of marine microorganisms provide a valuable clue of past climatic conditions.

Accepted Answer

A) True 
 B)False

Question 14

Many scientists consider climate change to be one of the most critical issues facing humankind in the twenty-first century.

Accepted Answer

A) True 
 B)False

Question 15

According to the U.S.Department of Energy,how might the U.S.meet the carbon emission reduction targets in the Kyoto Protocol?

Accepted Answer

A)  At a cost of approximately $5 to $10 billion a year.
B)  At a savings of $7 to $37 billion a year.
C)  At a cost of approximately $10 to $15 billion a year and with a risk of higher unemployment.
D)  Without any economic benefits or detriments.

Question 16

Which of the following is the likely link between ocean acidification and increased anthropogenic emissions of carbon dioxide (CO2) ?

Accepted Answer

A)  Oceans may absorb up to 50% of rising concentrations of rising carbon.When dissolved CO2 mixes with saltwater,carbonic acid forms (H2CO3) .
B)  Atmospheric CO2 combines with atmospheric moisture forming a light carbonic acid (H2CO3) that is precipitated over the world's oceans.
C)  Increased photosynthetic activity in phytoplankton resulting from increased atmospheric CO2 concentrations results in acidification due to a complex chemical reaction during plant decay.
D)  Thermohaline circulation exchanges carbon between surface dissolved organic carbon and deep layers of dissolved inorganic carbon.

Question 17

According to readings from the Mauna Loa Observatory,CO2 concentrations in May 2013 exceeded which of the following for the first time during the last 800 000 years?

Accepted Answer

A)  100-ppm.
B)  200-ppm.
C)  300-ppm.
D)  400-ppm.

Question 18

The annual growth ring added by tree species is known as a varve.

Accepted Answer

A) True 
 B)False

Question 19

According to the RCP scenarios,which of the following represents major reductions in CO2 emissions and actions to remove CO2 from the atmosphere?

Accepted Answer

A)  RCP8.5.
B)  RCP6.0.
C)  RCP4.5.
D)  RCP2.6.

Question 20

What is radiative forcing? List gases and aerosols that have positive or negative radiative forcing.What is the primary source of each.

Accepted Answer

Radiative forcing (climate forcing)descr...

Exam 11: Climate Change

Which is a graph that plots monthly averages of CO2 concentrations since 1958?

Correct AnswerverifiedShow Answer

The annual growth ring added by tree species is known as a varve.

Correct AnswerverifiedShow Answer

Many scientists consider climate change to be one of the most critical issues facing humankind in the twenty-first century.

Correct AnswerverifiedShow Answer

A definitive link between climate change and extreme weather events has been established.

Correct AnswerverifiedShow Answer

What is radiative forcing? List gases and aerosols that have positive or negative radiative forcing.What is the primary source of each.

Correct AnswerverifiedRadiative forcing (climate forcing)descr...View AnswerShow Answer

To which do scientists primarily attribute the recent rise in atmospheric concentrations of nitrous oxide (N2O) ?

Correct AnswerverifiedShow Answer

Which of the following is a stated ancillary benefit of reducing greenhouse gas emissions?

Correct AnswerverifiedShow Answer

Of the following anthropogenic methane (CH4) sources,which is the largest?

Correct AnswerverifiedShow Answer

Which of the following is the likely link between ocean acidification and increased anthropogenic emissions of carbon dioxide (CO2) ?

Correct AnswerverifiedShow Answer

The United States leads the world in total carbon dioxide (CO2)emissions.

Correct AnswerverifiedShow Answer

Some climate feedback loops,such as CO2 weathering feedback,occur over very long time scales.

Correct AnswerverifiedShow Answer

Ice cores provide a climate record for how many past years?

Correct AnswerverifiedShow Answer

According to readings from the Mauna Loa Observatory,CO2 concentrations in May 2013 exceeded which of the following for the first time during the last 800 000 years?

Correct AnswerverifiedShow Answer

According to the RCP scenarios,which of the following represents major reductions in CO2 emissions and actions to remove CO2 from the atmosphere?

Correct AnswerverifiedShow Answer

The exoskeletons of marine microorganisms provide a valuable clue of past climatic conditions.

Correct AnswerverifiedShow Answer

According to the U.S.Department of Energy,how might the U.S.meet the carbon emission reduction targets in the Kyoto Protocol?

Correct AnswerverifiedShow Answer

With which does the IPCC Fifth Assessment Report conclude?

Correct AnswerverifiedShow Answer

Which is the most abundant greenhouse gas in the atmosphere of Earth?

Correct AnswerverifiedShow Answer

The rate of population growth decreased after 1950.

Correct AnswerverifiedShow Answer

Sea surface temperatures increased at an average annual rate of 0.07 C° from 1901 to 2012.

Correct AnswerverifiedShow Answer

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Radiative forcing (climate forcing)descr...
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