answer A ? ?12. Spicules ?a. are found in the photosphere. ?b. are magnetic disturbances that push large loops of material off the solar surface. ?c. are responsible for twisting the solar magnetic field and causing the sunspot cycle. ?d. appear in the corona near the north and south poles of the sun during a total solar eclipse. ?e. are visible in filtergrams of the solar chromosphere. ? answer E ? ?13. Which of the following is evidence that convection occurs in the layers just below the sun's photosphere? ?a. Sunspots appear to be cooler than their surroundings. ?b. Solar prominences lift large loops of gas into the chromosphere and corona. ?c. The solar wind emits large numbers of charged particles. ?d. The sun rotates differentially. ?e. The centers of granules are hot and moving away from the center of the sun. ? answer E ? ?Figure 7-1 ? ?14. The diagram in Figure 7-1 above shows a plot of the temperature of the sun as a function of distance above the bottom of the photosphere. At what distance above the bottom of the photosphere does the temperature of the sun change the most rapidly with distance? ?a. 1,000 km ?b. 2,300 km ?c. 2,500 km to 4,000 km ?d. 400 km ?e. a and c answer B ? ?15. The diagram in Figure 7-1 above shows a plot of the temperature of the sun as a function of distance above the bottom of the photosphere. What is the temperature of the sun at a distance of 2,000 km? ?a. 500 K ?b. 900 K ?c. 5,000 K ?d. 9,000 K ?e.100,000 K ? answer D ? ?16. The diagram in Figure 7-1 above shows a plot of the temperature of the sun as a
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