10 minutes maximum! Can you do it in 5? |
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1. Which one of the following methods of thermal energy transfer is most effective through solids?
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2. Which of the following is the best definition of the 'albedo' of a body?
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3. What is the accepted average value of the Earth's albedo?
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4. The 'solar constant' is a key value for considering global warming and the greenhouse effect. The value for Earth is taken to be about 1.4 kW m-2. Which of these best describes the solar constant?
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5-7. The graph below shows the how the intensity of radiation varies at different wavelengths for a given body. |
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5. Which of the answers below best describes this radiation spectrum?
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6. The radiation graph shown above is characteristic of a certain temperature. What happens to the height and position of the peak as the temperature falls?
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7. The peak wavelength in the graph above is at a wavelength of 2.9 x 10-6 m. This corresponds to a temperature of....
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8. A nearby star is twice the temperature of the Sun, but with only half the total surface area. | |||||||||||||||||
What is the total power output of this star compared to the power output of the Sun (PSun)?
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9. Which of the following is a major greenhouse gas in the atmosphere?
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10. Carbon dioxide is a major greenhouse gas. Which of the following statements best describes the action of carbon dioxide in the atmosphere?
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