Question 1

If a sunspot is half as bright as the surrounding photosphere of the Sun,what is the approximate temperature of the gas in the sunspot if the photosphere's average temperature is 5,800 K?

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Question 2

How do periods of strong solar activity affect near-Earth orbiting spacecraft?

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Question 3

Explain why magnetic fields trap coronal gas over much of the solar surface but allow it to escape in coronal holes.

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Question 4

When,during its 11-year cycle,is the Sun most luminous? What might this have to do with the Maunder Minimum?

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Question 5

Explain why the solution to the solar neutrino problem is an excellent example of how observations drive the evolution of science.

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Question 6

What is "limb darkening"? Explain why limb darkening occurs in the Sun.

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Question 7

In the text we considered the case of a "too-large" Sun.Show that a star with the same mass,composition,radius,and luminosity as the Sun,but with a higher temperature (that is,a "too-hot" Sun),also leads to a contradiction.

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Question 8

If a coronal mass ejection occurred on the Sun and ejected particles toward the Earth that traveled at the speed of 1,000 km/s,how long would it take them to reach Earth?

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Quiz 14: A Run-Of-The-Mill G-Type Starour Sun