Question 1

Methane is approximately 23 times more powerful than carbon dioxide as a greenhouse gas.Which are significant sources of methane emissions?
I.The digestive systems of ruminants (cows,sheep,etc. )
II.Automobile exhaust
III.Rice cultivation
IV.Decaying wetland vegetation

Accepted Answer

Remember that there are several sources of methane.

Question 2

Which characteristics pertain to the problem of global warming?
I.Possible consequences include altered climate and increased sea level.
II.Heat energy radiated by the earth is captured by atmospheric molecules.
III.Increased skin cancer incidence and damage to radiation sensitive species has been observed.
IV.The concentration of stratospheric ozone is declining.

Accepted Answer

Remember that global warming is leading to climate change but has nothing to do with UV radiation or ozone.

Question 3

Tropospheric ozone (O₃)is a greenhouse gas.Why is O₃ not assigned a Global Warming Potential (GWP)?

Accepted Answer

Remember that ozone in the troposphere varies widely due to anthropogenic pollution.

Question 4

Where is most of the carbon on earth stored?

Accepted Answer

See Figure 3.20 for information of the global carbon cycle.

Question 5

The most abundant greenhouse gas in Earth's atmosphere is:

Accepted Answer

Remember that the earth is ~70% water.

Question 6

Both the Clinton and G.W. Bush administrations were unwilling to sign the Kyoto Protocol. What was their primary objection to the treaty?

Accepted Answer

Remember the quick growth and industrialization of China and India.

Question 7

Which substances are regulated by the Kyoto Protocol?
I.argon
II.carbon dioxide
III.nitrogen
IV.nitrous oxide
V.sulfur hexafluoride

Accepted Answer

Remember that atoms or molecules of a single element do not contribute to warming.

Question 8

Although greenhouse gases likely account for the problem of global warming,they are also responsible for making earth habitable.What would be the temperature on earth in the absence of the effects of carbon dioxide and water?

Accepted Answer

Remember that the average temperature of the earth is about 15°C at present and that we are not too far from or too close to the sun.

Question 9

If the average temperature of earth is currently 15.0°C,what does the NOAA model (the line in the graph)predict for the average global temperature in 2080?

Accepted Answer

Remember that the graph represents the temperature change in addition to the current average temperature.

Question 10

The ability of a molecule to absorb infrared radiation is measured with IR spectrometers,which report the frequency of light absorbed in units of cm¯¹.Which explanation best describes this unit?

Accepted Answer

Remember that this would tell the amount of light "per centimeter".

Question 11

What is the mass of exactly 500 sulfur atoms?

Accepted Answer

Remember that one mole is 6.02 x 10²³ items and one sulfur has a molar mass of 32 g/mole.

Question 12

The majority of N₂O molecules in the atmosphere come from

Accepted Answer

Remember that this is part of the nitrogen cycle.

Question 13

The Industrial Revolution is a key point in the Earth's atmospheric history because

Accepted Answer

Remember that it is combustion of fossil fuels that facilitated the Industrial Revolution.

Question 14

CO₂ emissions in China declined by 9% over the five-year period ending in 2000.If 5.00 × 10⁸ metric tons (t)of CO₂ was emitted in 1995,how much CO₂ was released in 2000?

Accepted Answer

Remember that you need to find what value is represented by 9% and subtract that from the initial value.

Question 15

What factors are considered in determining the global warming potential for a particular molecule?
I.Relative contribution of a molecule of gas to global warming
II.Lifetime in the atmosphere
III.Atmospheric concentration

Accepted Answer

Remember that the GWP represents the relative contribution of one molecule of the atmospheric gas to global warming.

Question 16

Identify possible consequences of global warming.
I.A rise in sea level
II.An increase in average relative humidity
III.An increase in forest growth in the Northern Hemisphere
IV.A weakening of ocean currents

Accepted Answer

Remember that global warming has far reaching,and often unexpected,implications for the climate.

Question 17

Calculate the percentage,by mass,of fluorine in sulfur hexafluoride (SF₆),a potent greenhouse gas.

Accepted Answer

Remember that you need to take the mass of all 6 fluorides divided by the total mass of the molecule.

Question 18

Identify the single most effective strategy to reduce carbon dioxide emissions.

Accepted Answer

Remember that the combustion of anything containing carbon will result in the formation of carbon dioxide.

Question 19

Land use changes have a big impact on global warming because of their effect on albedo.Albedo

Accepted Answer

Remember that is very influential when examining how much heat the earth absorbs.

Question 20

Forcings are

Accepted Answer

Remember that forcings can be positive or negative.

Quiz 3: The Chemistry of Global Climate Change

Methane is approximately 23 times more powerful than carbon dioxide as a greenhouse gas.Which are significant sources of methane emissions? I.The digestive systems of ruminants (cows,sheep,etc. ) II.Automobile exhaust III.Rice cultivation IV.Decaying wetland vegetation

Tropospheric ozone (O₃) is a greenhouse gas.Why is O₃ not assigned a Global Warming Potential (GWP) ?

Where is most of the carbon on earth stored?

The most abundant greenhouse gas in Earth's atmosphere is:

Both the Clinton and G.W. Bush administrations were unwilling to sign the Kyoto Protocol. What was their primary objection to the treaty?

Which substances are regulated by the Kyoto Protocol? I.argon II.carbon dioxide III.nitrogen IV.nitrous oxide V.sulfur hexafluoride

Although greenhouse gases likely account for the problem of global warming,they are also responsible for making earth habitable.What would be the temperature on earth in the absence of the effects of carbon dioxide and water?

If the average temperature of earth is currently 15.0°C,what does the NOAA model (the line in the graph) predict for the average global temperature in 2080?

The ability of a molecule to absorb infrared radiation is measured with IR spectrometers,which report the frequency of light absorbed in units of cm¯¹.Which explanation best describes this unit?

What is the mass of exactly 500 sulfur atoms?

The majority of N₂O molecules in the atmosphere come from

The Industrial Revolution is a key point in the Earth's atmospheric history because

CO₂ emissions in China declined by 9% over the five-year period ending in 2000.If 5.00 × 10⁸ metric tons (t) of CO₂ was emitted in 1995,how much CO₂ was released in 2000?

What factors are considered in determining the global warming potential for a particular molecule? I.Relative contribution of a molecule of gas to global warming II.Lifetime in the atmosphere III.Atmospheric concentration

Identify possible consequences of global warming. I.A rise in sea level II.An increase in average relative humidity III.An increase in forest growth in the Northern Hemisphere IV.A weakening of ocean currents

Calculate the percentage,by mass,of fluorine in sulfur hexafluoride (SF₆) ,a potent greenhouse gas.

Identify the single most effective strategy to reduce carbon dioxide emissions.

Land use changes have a big impact on global warming because of their effect on albedo.Albedo

Forcings are

Quiz 3: The Chemistry of Global Climate Change

Methane is approximately 23 times more powerful than carbon dioxide as a greenhouse gas.Which are significant sources of methane emissions? I.The digestive systems of ruminants (cows,sheep,etc. ) II.Automobile exhaust III.Rice cultivation IV.Decaying wetland vegetation

Tropospheric ozone (O3) is a greenhouse gas.Why is O3 not assigned a Global Warming Potential (GWP) ?

Where is most of the carbon on earth stored?

The most abundant greenhouse gas in Earth's atmosphere is:

Both the Clinton and G.W. Bush administrations were unwilling to sign the Kyoto Protocol. What was their primary objection to the treaty?

Which substances are regulated by the Kyoto Protocol? I.argon II.carbon dioxide III.nitrogen IV.nitrous oxide V.sulfur hexafluoride

Although greenhouse gases likely account for the problem of global warming,they are also responsible for making earth habitable.What would be the temperature on earth in the absence of the effects of carbon dioxide and water?

If the average temperature of earth is currently 15.0°C,what does the NOAA model (the line in the graph) predict for the average global temperature in 2080?

The ability of a molecule to absorb infrared radiation is measured with IR spectrometers,which report the frequency of light absorbed in units of cm¯1.Which explanation best describes this unit?

What is the mass of exactly 500 sulfur atoms?

The majority of N2O molecules in the atmosphere come from

The Industrial Revolution is a key point in the Earth's atmospheric history because

CO2 emissions in China declined by 9% over the five-year period ending in 2000.If 5.00 × 108 metric tons (t) of CO2 was emitted in 1995,how much CO2 was released in 2000?

What factors are considered in determining the global warming potential for a particular molecule? I.Relative contribution of a molecule of gas to global warming II.Lifetime in the atmosphere III.Atmospheric concentration

Identify possible consequences of global warming. I.A rise in sea level II.An increase in average relative humidity III.An increase in forest growth in the Northern Hemisphere IV.A weakening of ocean currents

Calculate the percentage,by mass,of fluorine in sulfur hexafluoride (SF6) ,a potent greenhouse gas.

Identify the single most effective strategy to reduce carbon dioxide emissions.

Land use changes have a big impact on global warming because of their effect on albedo.Albedo

Forcings are

Tropospheric ozone (O₃) is a greenhouse gas.Why is O₃ not assigned a Global Warming Potential (GWP) ?

The ability of a molecule to absorb infrared radiation is measured with IR spectrometers,which report the frequency of light absorbed in units of cm¯¹.Which explanation best describes this unit?

The majority of N₂O molecules in the atmosphere come from

CO₂ emissions in China declined by 9% over the five-year period ending in 2000.If 5.00 × 10⁸ metric tons (t) of CO₂ was emitted in 1995,how much CO₂ was released in 2000?

Calculate the percentage,by mass,of fluorine in sulfur hexafluoride (SF₆) ,a potent greenhouse gas.