Lab Exercise 7 An Incident On the Sun

The Sunspot Cycle

Read  Laboratory Exercise 7 section 7.3a and answer questions 17-20.



Figure 7.13  Graph of  the number of sunspots  from 1700 to 1993.

Sunspot Cycle





Figure 7.14 Sunspot number for the last 5 years. Solid line is the predicted number. Dotted lines are the predicted extremes.

predict



Figure 7.15   Magnetograms of July 18, 1990 and July 18, 2000. Sunspots typically come in magnetic pairs. Sunspots with positive polarity (white) are next to sunspots of negative polarity (black). This polarity flips for sunspots in the southern hemisphere of the sun compared to sunspots in the northern hemisphere. How are these two pictures different?


July 18 1990
July 18 2000
Magnetogram for July 18, 1990 (NSO)
Magnetogram for July 18, 2000 (SOHO)


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