How things work college course/Global warming quiz 3/Testbank

GlobalWarmingQ3

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GlobalWarmingQ3-v1s1

1. It is expected that carbon emissions will begin to diminish in the 21st century as fossil fuel reserves begin to dwindle.

___ a) true

___ b) false

2. Global dimming, caused by air-born particulates produced by volcanoes and human made pollutants

___ a) exerts a cooling effect by increasing the reflection of incoming sunlight

___ b) is more related to the ozone problem than to global warming

___ c) exerts a heating effect by absorbing infra-red radiation from earth's surface

3. The climate change community is divided between those who believe the goal should be to eliminate the earth's greenhouse effect altogether, and those who argue that we should attempt to minimize earth's greenhouse effect.

___ a) true

___ b) false

4. The Keeling curve shows that carbon dioxide concentrations

___ a) show a steady rise in CO2 levels, with increasing slope, and regular and predictable annual fluctuations

___ b) show a steady rise in CO2 levels, at constant slope, and irregular fluctuations due associated with El Ninos and La Ninas.

___ c) show a steady rise in CO2 levels, at constant slope, and regular and predictable annual fluctuations

5. Carbon dioxide contributes more to the greenhouse effect than does water vapor.

___ a) true

___ b) false

6. Depleting the ozone layer cools the stratosphere because ozone absorbs UV energy from the sun that heats the stratosphere.

___ a) true

___ b) false

7. Depleting the ozone layer cools the stratosphere because ozone allows UV radiation to penetrate.

___ a) true

___ b) false

8. Water vapor contributes more to the greenhouse effect than does carbon dioxide.

___ a) true

___ b) false

9. Which external force plays the smallest role in current efforts to model global warming?

___ a) orbital cycles

___ b) solar luminosity (i.e. variations in energy from the sun)

___ c) volcanic eruptions

___ d) greenhouse gasses

10. Soot tends to warm the earth when it accumulates in atmospheric brown clouds.

___ a) true

___ b) false

11. The distinction between the urban heat island effect and land use changes is that the latter involves the earth's average temperature while the former involves only the temperature near weather stations where the measurements are made

___ a) true

___ b) false

12. "External forcings" refer to effects that can either increase or decrease, the Earth's temperature.

___ a) true

___ b) false

13. In the arctic, soot tends to cool the earth.

___ a) true

___ b) false

14. Soot tends to cool the earth when it accumulates in atmospheric brown clouds.

___ a) true

___ b) false

15. The carbon cycle

___ a) describes how carbon is absorbed and emitted by the oceans, soil, plants, etc.

___ b) is an effort to store carbon in underground caves.

___ c) is a proposal to trade carbon credits.

16. The "Greenhouse effect schematic" in the section on "Temperature changes..." indicates that most of the energy from the Sun is absorbed by the earth's atmosphere.

___ a) true

___ b) false

17. Approximately what percent of global warming can be attributed to a long-term trend (since 1978) in the sun's energy?

___ a) 50%

___ b) 0%

___ c) 10%

___ d) 30%

18. "External forcings" refer to effects that can increase, but not decrease, the Earth's temperature.

___ a) true

___ b) false

19. In the arctic, soot tends to warm the earth.

___ a) true

___ b) false

20. The "Greenhouse effect schematic" in the section on "Temperature changes..." indicates that most of the energy from the Sun is absorbed at the earth's surface.

___ a) true

___ b) false

21. Greenhouse warming acts to cool the stratosphere

___ a) true

___ b) false

22. Emissions scenarios are

___ a) estimates of how greenhouse gasses are absorbed and emitted by nature

___ b) estimates of changes in future emission levels of greenhouse gases

___ c) estimates of how greenhouse gasses are absorbed and emitted by the world's oceans

___ d) estimates of how greenhouse gasses are absorbed and emitted by agriculture

23. Greenhouse warming acts to warm the stratosphere

___ a) true

___ b) false

Key to GlobalWarmingQ3-v1s1

1. It is expected that carbon emissions will begin to diminish in the 21st century as fossil fuel reserves begin to dwindle.

- a) true

+ b) false

2. Global dimming, caused by air-born particulates produced by volcanoes and human made pollutants

+ a) exerts a cooling effect by increasing the reflection of incoming sunlight

- b) is more related to the ozone problem than to global warming

- c) exerts a heating effect by absorbing infra-red radiation from earth's surface

3. The climate change community is divided between those who believe the goal should be to eliminate the earth's greenhouse effect altogether, and those who argue that we should attempt to minimize earth's greenhouse effect.

- a) true

+ b) false

4. The Keeling curve shows that carbon dioxide concentrations

+ a) show a steady rise in CO2 levels, with increasing slope, and regular and predictable annual fluctuations

- b) show a steady rise in CO2 levels, at constant slope, and irregular fluctuations due associated with El Ninos and La Ninas.

- c) show a steady rise in CO2 levels, at constant slope, and regular and predictable annual fluctuations

5. Carbon dioxide contributes more to the greenhouse effect than does water vapor.

- a) true

+ b) false

6. Depleting the ozone layer cools the stratosphere because ozone absorbs UV energy from the sun that heats the stratosphere.

+ a) true

- b) false

7. Depleting the ozone layer cools the stratosphere because ozone allows UV radiation to penetrate.

- a) true

+ b) false

8. Water vapor contributes more to the greenhouse effect than does carbon dioxide.

+ a) true

- b) false

9. Which external force plays the smallest role in current efforts to model global warming?

+ a) orbital cycles

- b) solar luminosity (i.e. variations in energy from the sun)

- c) volcanic eruptions

- d) greenhouse gasses

10. Soot tends to warm the earth when it accumulates in atmospheric brown clouds.

- a) true

+ b) false

11. The distinction between the urban heat island effect and land use changes is that the latter involves the earth's average temperature while the former involves only the temperature near weather stations where the measurements are made

+ a) true

- b) false

12. "External forcings" refer to effects that can either increase or decrease, the Earth's temperature.

- a) true

+ b) false

13. In the arctic, soot tends to cool the earth.

- a) true

+ b) false

14. Soot tends to cool the earth when it accumulates in atmospheric brown clouds.

+ a) true

- b) false

15. The carbon cycle

+ a) describes how carbon is absorbed and emitted by the oceans, soil, plants, etc.

- b) is an effort to store carbon in underground caves.

- c) is a proposal to trade carbon credits.

16. The "Greenhouse effect schematic" in the section on "Temperature changes..." indicates that most of the energy from the Sun is absorbed by the earth's atmosphere.

- a) true

+ b) false

17. Approximately what percent of global warming can be attributed to a long-term trend (since 1978) in the sun's energy?

- a) 50%

+ b) 0%

- c) 10%

- d) 30%

18. "External forcings" refer to effects that can increase, but not decrease, the Earth's temperature.

- a) true

+ b) false

19. In the arctic, soot tends to warm the earth.

+ a) true

- b) false

20. The "Greenhouse effect schematic" in the section on "Temperature changes..." indicates that most of the energy from the Sun is absorbed at the earth's surface.

+ a) true

- b) false

21. Greenhouse warming acts to cool the stratosphere

+ a) true

- b) false

22. Emissions scenarios are

- a) estimates of how greenhouse gasses are absorbed and emitted by nature

+ b) estimates of changes in future emission levels of greenhouse gases

- c) estimates of how greenhouse gasses are absorbed and emitted by the world's oceans

- d) estimates of how greenhouse gasses are absorbed and emitted by agriculture

23. Greenhouse warming acts to warm the stratosphere

- a) true

+ b) false

GlobalWarmingQ3-v2s1

1. Soot tends to warm the earth when it accumulates in atmospheric brown clouds.

___ a) true

___ b) false

2. Global dimming, caused by air-born particulates produced by volcanoes and human made pollutants

___ a) exerts a cooling effect by increasing the reflection of incoming sunlight

___ b) exerts a heating effect by absorbing infra-red radiation from earth's surface

___ c) is more related to the ozone problem than to global warming

3. Depleting the ozone layer cools the stratosphere because ozone absorbs UV energy from the sun that heats the stratosphere.

___ a) true

___ b) false

4. Soot tends to cool the earth when it accumulates in atmospheric brown clouds.

___ a) true

___ b) false

5. "External forcings" refer to effects that can increase, but not decrease, the Earth's temperature.

___ a) true

___ b) false

6. The distinction between the urban heat island effect and land use changes is that the latter involves the earth's average temperature while the former involves only the temperature near weather stations where the measurements are made

___ a) true

___ b) false

7. The carbon cycle

___ a) is an effort to store carbon in underground caves.

___ b) is a proposal to trade carbon credits.

___ c) describes how carbon is absorbed and emitted by the oceans, soil, plants, etc.

8. In the arctic, soot tends to cool the earth.

___ a) true

___ b) false

9. Depleting the ozone layer cools the stratosphere because ozone allows UV radiation to penetrate.

___ a) true

___ b) false

10. Greenhouse warming acts to cool the stratosphere

___ a) true

___ b) false

11. The climate change community is divided between those who believe the goal should be to eliminate the earth's greenhouse effect altogether, and those who argue that we should attempt to minimize earth's greenhouse effect.

___ a) true

___ b) false

12. Carbon dioxide contributes more to the greenhouse effect than does water vapor.

___ a) true

___ b) false

13. The "Greenhouse effect schematic" in the section on "Temperature changes..." indicates that most of the energy from the Sun is absorbed at the earth's surface.

___ a) true

___ b) false

14. Greenhouse warming acts to warm the stratosphere

___ a) true

___ b) false

15. The "Greenhouse effect schematic" in the section on "Temperature changes..." indicates that most of the energy from the Sun is absorbed by the earth's atmosphere.

___ a) true

___ b) false

16. Which external force plays the smallest role in current efforts to model global warming?

___ a) orbital cycles

___ b) greenhouse gasses

___ c) volcanic eruptions

___ d) solar luminosity (i.e. variations in energy from the sun)

17. Approximately what percent of global warming can be attributed to a long-term trend (since 1978) in the sun's energy?

___ a) 0%

___ b) 30%

___ c) 10%

___ d) 50%

18. The Keeling curve shows that carbon dioxide concentrations

___ a) show a steady rise in CO2 levels, at constant slope, and irregular fluctuations due associated with El Ninos and La Ninas.

___ b) show a steady rise in CO2 levels, with increasing slope, and regular and predictable annual fluctuations

___ c) show a steady rise in CO2 levels, at constant slope, and regular and predictable annual fluctuations

19. In the arctic, soot tends to warm the earth.

___ a) true

___ b) false

20. Emissions scenarios are

___ a) estimates of changes in future emission levels of greenhouse gases

___ b) estimates of how greenhouse gasses are absorbed and emitted by agriculture

___ c) estimates of how greenhouse gasses are absorbed and emitted by the world's oceans

___ d) estimates of how greenhouse gasses are absorbed and emitted by nature

21. It is expected that carbon emissions will begin to diminish in the 21st century as fossil fuel reserves begin to dwindle.

___ a) true

___ b) false

22. Water vapor contributes more to the greenhouse effect than does carbon dioxide.

___ a) true

___ b) false

23. "External forcings" refer to effects that can either increase or decrease, the Earth's temperature.

___ a) true

___ b) false

Key to GlobalWarmingQ3-v2s1

1. Soot tends to warm the earth when it accumulates in atmospheric brown clouds.

- a) true

+ b) false

2. Global dimming, caused by air-born particulates produced by volcanoes and human made pollutants

+ a) exerts a cooling effect by increasing the reflection of incoming sunlight

- b) exerts a heating effect by absorbing infra-red radiation from earth's surface

- c) is more related to the ozone problem than to global warming

3. Depleting the ozone layer cools the stratosphere because ozone absorbs UV energy from the sun that heats the stratosphere.

+ a) true

- b) false

4. Soot tends to cool the earth when it accumulates in atmospheric brown clouds.

+ a) true

- b) false

5. "External forcings" refer to effects that can increase, but not decrease, the Earth's temperature.

- a) true

+ b) false

6. The distinction between the urban heat island effect and land use changes is that the latter involves the earth's average temperature while the former involves only the temperature near weather stations where the measurements are made

+ a) true

- b) false

7. The carbon cycle

- a) is an effort to store carbon in underground caves.

- b) is a proposal to trade carbon credits.

+ c) describes how carbon is absorbed and emitted by the oceans, soil, plants, etc.

8. In the arctic, soot tends to cool the earth.

- a) true

+ b) false

9. Depleting the ozone layer cools the stratosphere because ozone allows UV radiation to penetrate.

- a) true

+ b) false

10. Greenhouse warming acts to cool the stratosphere

+ a) true

- b) false

11. The climate change community is divided between those who believe the goal should be to eliminate the earth's greenhouse effect altogether, and those who argue that we should attempt to minimize earth's greenhouse effect.

- a) true

+ b) false

12. Carbon dioxide contributes more to the greenhouse effect than does water vapor.

- a) true

+ b) false

13. The "Greenhouse effect schematic" in the section on "Temperature changes..." indicates that most of the energy from the Sun is absorbed at the earth's surface.

+ a) true

- b) false

14. Greenhouse warming acts to warm the stratosphere

- a) true

+ b) false

15. The "Greenhouse effect schematic" in the section on "Temperature changes..." indicates that most of the energy from the Sun is absorbed by the earth's atmosphere.

- a) true

+ b) false

16. Which external force plays the smallest role in current efforts to model global warming?

+ a) orbital cycles

- b) greenhouse gasses

- c) volcanic eruptions

- d) solar luminosity (i.e. variations in energy from the sun)

17. Approximately what percent of global warming can be attributed to a long-term trend (since 1978) in the sun's energy?

+ a) 0%

- b) 30%

- c) 10%

- d) 50%

18. The Keeling curve shows that carbon dioxide concentrations

- a) show a steady rise in CO2 levels, at constant slope, and irregular fluctuations due associated with El Ninos and La Ninas.

+ b) show a steady rise in CO2 levels, with increasing slope, and regular and predictable annual fluctuations

- c) show a steady rise in CO2 levels, at constant slope, and regular and predictable annual fluctuations

19. In the arctic, soot tends to warm the earth.

+ a) true

- b) false

20. Emissions scenarios are

+ a) estimates of changes in future emission levels of greenhouse gases

- b) estimates of how greenhouse gasses are absorbed and emitted by agriculture

- c) estimates of how greenhouse gasses are absorbed and emitted by the world's oceans

- d) estimates of how greenhouse gasses are absorbed and emitted by nature

21. It is expected that carbon emissions will begin to diminish in the 21st century as fossil fuel reserves begin to dwindle.

- a) true

+ b) false

22. Water vapor contributes more to the greenhouse effect than does carbon dioxide.

+ a) true

- b) false

23. "External forcings" refer to effects that can either increase or decrease, the Earth's temperature.

- a) true

+ b) false

GlobalWarmingQ3-v1s2

1. The climate change community is divided between those who believe the goal should be to eliminate the earth's greenhouse effect altogether, and those who argue that we should attempt to minimize earth's greenhouse effect.

___ a) true

___ b) false

2. The Keeling curve shows that carbon dioxide concentrations

___ a) show a steady rise in CO2 levels, at constant slope, and regular and predictable annual fluctuations

___ b) show a steady rise in CO2 levels, at constant slope, and irregular fluctuations due associated with El Ninos and La Ninas.

___ c) show a steady rise in CO2 levels, with increasing slope, and regular and predictable annual fluctuations

3. Depleting the ozone layer cools the stratosphere because ozone allows UV radiation to penetrate.

___ a) true

___ b) false

4. Greenhouse warming acts to cool the stratosphere

___ a) true

___ b) false

5. Water vapor contributes more to the greenhouse effect than does carbon dioxide.

___ a) true

___ b) false

6. Depleting the ozone layer cools the stratosphere because ozone absorbs UV energy from the sun that heats the stratosphere.

___ a) true

___ b) false

7. "External forcings" refer to effects that can increase, but not decrease, the Earth's temperature.

___ a) true

___ b) false

8. Global dimming, caused by air-born particulates produced by volcanoes and human made pollutants

___ a) is more related to the ozone problem than to global warming

___ b) exerts a cooling effect by increasing the reflection of incoming sunlight

___ c) exerts a heating effect by absorbing infra-red radiation from earth's surface

9. Approximately what percent of global warming can be attributed to a long-term trend (since 1978) in the sun's energy?

___ a) 0%

___ b) 50%

___ c) 30%

___ d) 10%

10. The "Greenhouse effect schematic" in the section on "Temperature changes..." indicates that most of the energy from the Sun is absorbed at the earth's surface.

___ a) true

___ b) false

11. In the arctic, soot tends to cool the earth.

___ a) true

___ b) false

12. The "Greenhouse effect schematic" in the section on "Temperature changes..." indicates that most of the energy from the Sun is absorbed by the earth's atmosphere.

___ a) true

___ b) false

13. Carbon dioxide contributes more to the greenhouse effect than does water vapor.

___ a) true

___ b) false

14. It is expected that carbon emissions will begin to diminish in the 21st century as fossil fuel reserves begin to dwindle.

___ a) true

___ b) false

15. "External forcings" refer to effects that can either increase or decrease, the Earth's temperature.

___ a) true

___ b) false

16. The distinction between the urban heat island effect and land use changes is that the latter involves the earth's average temperature while the former involves only the temperature near weather stations where the measurements are made

___ a) true

___ b) false

17. Soot tends to warm the earth when it accumulates in atmospheric brown clouds.

___ a) true

___ b) false

18. Greenhouse warming acts to warm the stratosphere

___ a) true

___ b) false

19. Soot tends to cool the earth when it accumulates in atmospheric brown clouds.

___ a) true

___ b) false

20. Which external force plays the smallest role in current efforts to model global warming?

___ a) solar luminosity (i.e. variations in energy from the sun)

___ b) greenhouse gasses

___ c) volcanic eruptions

___ d) orbital cycles

21. In the arctic, soot tends to warm the earth.

___ a) true

___ b) false

22. Emissions scenarios are

___ a) estimates of changes in future emission levels of greenhouse gases

___ b) estimates of how greenhouse gasses are absorbed and emitted by nature

___ c) estimates of how greenhouse gasses are absorbed and emitted by agriculture

___ d) estimates of how greenhouse gasses are absorbed and emitted by the world's oceans

23. The carbon cycle

___ a) is a proposal to trade carbon credits.

___ b) describes how carbon is absorbed and emitted by the oceans, soil, plants, etc.

___ c) is an effort to store carbon in underground caves.

Key to GlobalWarmingQ3-v1s2

1. The climate change community is divided between those who believe the goal should be to eliminate the earth's greenhouse effect altogether, and those who argue that we should attempt to minimize earth's greenhouse effect.

- a) true

+ b) false

2. The Keeling curve shows that carbon dioxide concentrations

- a) show a steady rise in CO2 levels, at constant slope, and regular and predictable annual fluctuations

- b) show a steady rise in CO2 levels, at constant slope, and irregular fluctuations due associated with El Ninos and La Ninas.

+ c) show a steady rise in CO2 levels, with increasing slope, and regular and predictable annual fluctuations

3. Depleting the ozone layer cools the stratosphere because ozone allows UV radiation to penetrate.

- a) true

+ b) false

4. Greenhouse warming acts to cool the stratosphere

+ a) true

- b) false

5. Water vapor contributes more to the greenhouse effect than does carbon dioxide.

+ a) true

- b) false

6. Depleting the ozone layer cools the stratosphere because ozone absorbs UV energy from the sun that heats the stratosphere.

+ a) true

- b) false

7. "External forcings" refer to effects that can increase, but not decrease, the Earth's temperature.

- a) true

+ b) false

8. Global dimming, caused by air-born particulates produced by volcanoes and human made pollutants

- a) is more related to the ozone problem than to global warming

+ b) exerts a cooling effect by increasing the reflection of incoming sunlight

- c) exerts a heating effect by absorbing infra-red radiation from earth's surface

9. Approximately what percent of global warming can be attributed to a long-term trend (since 1978) in the sun's energy?

+ a) 0%

- b) 50%

- c) 30%

- d) 10%

10. The "Greenhouse effect schematic" in the section on "Temperature changes..." indicates that most of the energy from the Sun is absorbed at the earth's surface.

+ a) true

- b) false

11. In the arctic, soot tends to cool the earth.

- a) true

+ b) false

12. The "Greenhouse effect schematic" in the section on "Temperature changes..." indicates that most of the energy from the Sun is absorbed by the earth's atmosphere.

- a) true

+ b) false

13. Carbon dioxide contributes more to the greenhouse effect than does water vapor.

- a) true

+ b) false

14. It is expected that carbon emissions will begin to diminish in the 21st century as fossil fuel reserves begin to dwindle.

- a) true

+ b) false

15. "External forcings" refer to effects that can either increase or decrease, the Earth's temperature.

- a) true

+ b) false

16. The distinction between the urban heat island effect and land use changes is that the latter involves the earth's average temperature while the former involves only the temperature near weather stations where the measurements are made

+ a) true

- b) false

17. Soot tends to warm the earth when it accumulates in atmospheric brown clouds.

- a) true

+ b) false

18. Greenhouse warming acts to warm the stratosphere

- a) true

+ b) false

19. Soot tends to cool the earth when it accumulates in atmospheric brown clouds.

+ a) true

- b) false

20. Which external force plays the smallest role in current efforts to model global warming?

- a) solar luminosity (i.e. variations in energy from the sun)

- b) greenhouse gasses

- c) volcanic eruptions

+ d) orbital cycles

21. In the arctic, soot tends to warm the earth.

+ a) true

- b) false

22. Emissions scenarios are

+ a) estimates of changes in future emission levels of greenhouse gases

- b) estimates of how greenhouse gasses are absorbed and emitted by nature

- c) estimates of how greenhouse gasses are absorbed and emitted by agriculture

- d) estimates of how greenhouse gasses are absorbed and emitted by the world's oceans

23. The carbon cycle

- a) is a proposal to trade carbon credits.

+ b) describes how carbon is absorbed and emitted by the oceans, soil, plants, etc.

- c) is an effort to store carbon in underground caves.

GlobalWarmingQ3-v2s2

1. The "Greenhouse effect schematic" in the section on "Temperature changes..." indicates that most of the energy from the Sun is absorbed at the earth's surface.

___ a) true

___ b) false

2. Greenhouse warming acts to warm the stratosphere

___ a) true

___ b) false

3. "External forcings" refer to effects that can increase, but not decrease, the Earth's temperature.

___ a) true

___ b) false

4. Depleting the ozone layer cools the stratosphere because ozone allows UV radiation to penetrate.

___ a) true

___ b) false

5. Soot tends to warm the earth when it accumulates in atmospheric brown clouds.

___ a) true

___ b) false

6. Emissions scenarios are

___ a) estimates of how greenhouse gasses are absorbed and emitted by nature

___ b) estimates of how greenhouse gasses are absorbed and emitted by the world's oceans

___ c) estimates of changes in future emission levels of greenhouse gases

___ d) estimates of how greenhouse gasses are absorbed and emitted by agriculture

7. Carbon dioxide contributes more to the greenhouse effect than does water vapor.

___ a) true

___ b) false

8. Greenhouse warming acts to cool the stratosphere

___ a) true

___ b) false

9. Depleting the ozone layer cools the stratosphere because ozone absorbs UV energy from the sun that heats the stratosphere.

___ a) true

___ b) false

10. The "Greenhouse effect schematic" in the section on "Temperature changes..." indicates that most of the energy from the Sun is absorbed by the earth's atmosphere.

___ a) true

___ b) false

11. In the arctic, soot tends to warm the earth.

___ a) true

___ b) false

12. Approximately what percent of global warming can be attributed to a long-term trend (since 1978) in the sun's energy?

___ a) 0%

___ b) 50%

___ c) 30%

___ d) 10%

13. Soot tends to cool the earth when it accumulates in atmospheric brown clouds.

___ a) true

___ b) false

14. The climate change community is divided between those who believe the goal should be to eliminate the earth's greenhouse effect altogether, and those who argue that we should attempt to minimize earth's greenhouse effect.

___ a) true

___ b) false

15. Which external force plays the smallest role in current efforts to model global warming?

___ a) solar luminosity (i.e. variations in energy from the sun)

___ b) orbital cycles

___ c) volcanic eruptions

___ d) greenhouse gasses

16. Global dimming, caused by air-born particulates produced by volcanoes and human made pollutants

___ a) is more related to the ozone problem than to global warming

___ b) exerts a heating effect by absorbing infra-red radiation from earth's surface

___ c) exerts a cooling effect by increasing the reflection of incoming sunlight

17. The distinction between the urban heat island effect and land use changes is that the latter involves the earth's average temperature while the former involves only the temperature near weather stations where the measurements are made

___ a) true

___ b) false

18. The carbon cycle

___ a) describes how carbon is absorbed and emitted by the oceans, soil, plants, etc.

___ b) is a proposal to trade carbon credits.

___ c) is an effort to store carbon in underground caves.

19. Water vapor contributes more to the greenhouse effect than does carbon dioxide.

___ a) true

___ b) false

20. The Keeling curve shows that carbon dioxide concentrations

___ a) show a steady rise in CO2 levels, with increasing slope, and regular and predictable annual fluctuations

___ b) show a steady rise in CO2 levels, at constant slope, and regular and predictable annual fluctuations

___ c) show a steady rise in CO2 levels, at constant slope, and irregular fluctuations due associated with El Ninos and La Ninas.

21. It is expected that carbon emissions will begin to diminish in the 21st century as fossil fuel reserves begin to dwindle.

___ a) true

___ b) false

22. "External forcings" refer to effects that can either increase or decrease, the Earth's temperature.

___ a) true

___ b) false

23. In the arctic, soot tends to cool the earth.

___ a) true

___ b) false

Key to GlobalWarmingQ3-v2s2

1. The "Greenhouse effect schematic" in the section on "Temperature changes..." indicates that most of the energy from the Sun is absorbed at the earth's surface.

+ a) true

- b) false

2. Greenhouse warming acts to warm the stratosphere

- a) true

+ b) false

3. "External forcings" refer to effects that can increase, but not decrease, the Earth's temperature.

- a) true

+ b) false

4. Depleting the ozone layer cools the stratosphere because ozone allows UV radiation to penetrate.

- a) true

+ b) false

5. Soot tends to warm the earth when it accumulates in atmospheric brown clouds.

- a) true

+ b) false

6. Emissions scenarios are

- a) estimates of how greenhouse gasses are absorbed and emitted by nature

- b) estimates of how greenhouse gasses are absorbed and emitted by the world's oceans

+ c) estimates of changes in future emission levels of greenhouse gases

- d) estimates of how greenhouse gasses are absorbed and emitted by agriculture

7. Carbon dioxide contributes more to the greenhouse effect than does water vapor.

- a) true

+ b) false

8. Greenhouse warming acts to cool the stratosphere

+ a) true

- b) false

9. Depleting the ozone layer cools the stratosphere because ozone absorbs UV energy from the sun that heats the stratosphere.

+ a) true

- b) false

10. The "Greenhouse effect schematic" in the section on "Temperature changes..." indicates that most of the energy from the Sun is absorbed by the earth's atmosphere.

- a) true

+ b) false

11. In the arctic, soot tends to warm the earth.

+ a) true

- b) false

12. Approximately what percent of global warming can be attributed to a long-term trend (since 1978) in the sun's energy?

+ a) 0%

- b) 50%

- c) 30%

- d) 10%

13. Soot tends to cool the earth when it accumulates in atmospheric brown clouds.

+ a) true

- b) false

14. The climate change community is divided between those who believe the goal should be to eliminate the earth's greenhouse effect altogether, and those who argue that we should attempt to minimize earth's greenhouse effect.

- a) true

+ b) false

15. Which external force plays the smallest role in current efforts to model global warming?

- a) solar luminosity (i.e. variations in energy from the sun)

+ b) orbital cycles

- c) volcanic eruptions

- d) greenhouse gasses

16. Global dimming, caused by air-born particulates produced by volcanoes and human made pollutants

- a) is more related to the ozone problem than to global warming

- b) exerts a heating effect by absorbing infra-red radiation from earth's surface

+ c) exerts a cooling effect by increasing the reflection of incoming sunlight

17. The distinction between the urban heat island effect and land use changes is that the latter involves the earth's average temperature while the former involves only the temperature near weather stations where the measurements are made

+ a) true

- b) false

18. The carbon cycle

+ a) describes how carbon is absorbed and emitted by the oceans, soil, plants, etc.

- b) is a proposal to trade carbon credits.

- c) is an effort to store carbon in underground caves.

19. Water vapor contributes more to the greenhouse effect than does carbon dioxide.

+ a) true

- b) false

20. The Keeling curve shows that carbon dioxide concentrations

+ a) show a steady rise in CO2 levels, with increasing slope, and regular and predictable annual fluctuations

- b) show a steady rise in CO2 levels, at constant slope, and regular and predictable annual fluctuations

- c) show a steady rise in CO2 levels, at constant slope, and irregular fluctuations due associated with El Ninos and La Ninas.

21. It is expected that carbon emissions will begin to diminish in the 21st century as fossil fuel reserves begin to dwindle.

- a) true

+ b) false

22. "External forcings" refer to effects that can either increase or decrease, the Earth's temperature.

- a) true

+ b) false

23. In the arctic, soot tends to cool the earth.

- a) true

+ b) false

Attribution (for quiz questions) under CC-by-SA license

http://en.wikiversity.org/wiki/How_things_work_college_course/Global_warming_quizzes

Study guide

http://en.wikipedia.org/w/index.php?title=Global_warming&oldid=618541358