Sunspots are dark areas on the surface of the sun that are correlated with a number of terrestrial effects, such as changes in radio communication and geomagnetic storms. They are not hotter than the rest of the solar surface and are not clouds floating in the solar atmosphere. While they can occur at random intervals, they typically follow an 11-year cycle.

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Sunspots

Question 7

Multiple Choice

Sunspots

A) are hotter than the rest of the solar surface.
B) are dark clouds floating in the solar atmosphere.
C) occur at random intervals.
D) are correlated with a number of terrestrial effects.

Correct Answer: