Podcast
Questions and Answers
Which of the following is NOT a principal greenhouse gas?
Which of the following is NOT a principal greenhouse gas?
- Carbon dioxide
- Oxygen (correct)
- Nitrous oxide
- Methane
What is the main function of greenhouse gases?
What is the main function of greenhouse gases?
- Absorbing and re-emitting infrared radiation (correct)
- Reflecting sunlight back into space
- Generating oxygen for the atmosphere
- Creating a barrier to prevent heat from escaping the atmosphere
What percentage of nitrogen is present in the Earth’s atmosphere by volume?
What percentage of nitrogen is present in the Earth’s atmosphere by volume?
- 0.9%
- 78% (correct)
- 21%
- 10%
How can the greenhouse effect be explained?
How can the greenhouse effect be explained?
Which of the following statements about greenhouse gases is true?
Which of the following statements about greenhouse gases is true?
What do greenhouse gases do in terms of radiation?
What do greenhouse gases do in terms of radiation?
Which greenhouse gas is most abundant in the atmosphere?
Which greenhouse gas is most abundant in the atmosphere?
Which greenhouse gas contributes most to the overall greenhouse effect?
Which greenhouse gas contributes most to the overall greenhouse effect?
Why do scientists not believe that future changes in water vapour concentrations will significantly affect the Earth's climate?
Why do scientists not believe that future changes in water vapour concentrations will significantly affect the Earth's climate?
Which greenhouse gas absorbs infrared radiation more strongly than carbon dioxide?
Which greenhouse gas absorbs infrared radiation more strongly than carbon dioxide?
What is the main reason nitrogen, oxygen, and argon have no greenhouse effect?
What is the main reason nitrogen, oxygen, and argon have no greenhouse effect?
What is the primary reason for the greenhouse effect?
What is the primary reason for the greenhouse effect?
What happens to the thermal radiation emitted by the Earth's surface in the absence of greenhouse gases?
What happens to the thermal radiation emitted by the Earth's surface in the absence of greenhouse gases?
What happens to about half of the thermal radiation re-radiated by greenhouse gas molecules?
What happens to about half of the thermal radiation re-radiated by greenhouse gas molecules?
What causes greenhouse gas molecules to absorb infrared radiation?
What causes greenhouse gas molecules to absorb infrared radiation?
What is the main factor determining the relative importance of greenhouse gases in causing the greenhouse effect?
What is the main factor determining the relative importance of greenhouse gases in causing the greenhouse effect?
