11 what is the physical state of the material in the

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11. What is the physical state of the material in the Sun? 12. What is the energy source of the Sun? Describe the physical process that releases energy. Discuss where this process occurs in the Sun and why it occurs there. 13. About how much longer will the Sun’s present nuclear energy reserve last? 14. What mechanisms transport energy in the Sun? Describe each process. Where is each mechanism important? 15. What is the evidence that convection occurs in the Sun? 16. List the layers of the solar atmosphere, in order of increasing distance from the Sun. Discuss the temperature variation in the solar atmosphere. 17. Define the following structures/events observed in the Sun’s atmosphere: spicule, prominence, flare. 18. Describe the properties of a sunspot. 19. How often does a sunspot maximum occur? What is the underlying cause of the solar cycle?
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A105, Prof. Cohn, First Semester 2012-13 2 20. What is the solar wind? What effect does it have on Earth? 21. What is a neutrino? What produces neutrinos in the Sun? What happens to the neutrinos next? Why are astrophysicists interested in detecting neutrinos from the Sun? 22. What is a “neutrino telescope”? Where are these located and why? 23. What is the “solar neutrino problem”? What is thought to be the most likely solution to this problem?
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