80 Sun energy flux: 63 x 10 Wim at the Sun surface 1370 Wim solar constant reaching Earth 342 Wi average entering atmosphere 240 Wim absorbed by Earth 70 black body 5778 K Earth energy flux: 240 Wim radated by Earth 10 black body 255 K scaled by 10 0.1 02 0304 ee 20 30 40 0 100 Wavelength (um) Figure F01-7-5. Answer these questions using the figure shown above. A. What is on the x and y axis of this graph? Describe in everyday words the meaning of the variable on the y-axis, using an example to clarify. B. What is the difference between the yellow and red curves? C. The yellow curve says that it was scaled by 10-6. What does that mean? How does that change how you interpret this plot? Can you explain this in terms of your experience of sunlight versus heat radiated by the earth? D. Why does the Earth radiate higher wavelength light than the sun? What type of light does the sun radiate compared to the type of light that Earth radiates? (Hint: convert the wavelengths to nanometers.) E. The energy flux from the sun does not entirely reach the Earth's surface. Using the data given, how much energy is reflected by the Earth's atmosphere? F. Why is it important that the energy flux that reaches the Earth's surface is equal to the amount of energy that the Earth radiates? (urtM

80 Sun energy flux: 63 x 10 Wim at the Sun surface 1370 Wim solar constant reaching Earth 342 Wi average entering atmosphere 240 Wim absorbed by Earth 70 black body 5778 K Earth energy flux: 240 Wim radated by Earth 10 black body 255 K scaled by 10 0.1 02 0304 ee 20 30 40 0 100 Wavelength (um) Figure F01-7-5. Answer these questions using the figure shown above. A. What is on the x and y axis of this graph? Describe in everyday words the meaning of the variable on the y-axis, using an example to clarify. B. What is the difference between the yellow and red curves? C. The yellow curve says that it was scaled by 10-6. What does that mean? How does that change how you interpret this plot? Can you explain this in terms of your experience of sunlight versus heat radiated by the earth? D. Why does the Earth radiate higher wavelength light than the sun? What type of light does the sun radiate compared to the type of light that Earth radiates? (Hint: convert the wavelengths to nanometers.) E. The energy flux from the sun does not entirely reach the Earth's surface. Using the data given, how much energy is reflected by the Earth's atmosphere? F. Why is it important that the energy flux that reaches the Earth's surface is equal to the amount of energy that the Earth radiates? (urtM