What is the structure of a typical large sunspot?
A) irregular dark area of uniform darkness
B) round region of uniformly dark photospheric surface
C) roughly circular, dark region with a lighter central area, like a bullseye
D) dark center surrounded by a less dark area
Correct Answer:
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Q87: The heliosphere
A) is spherical.
B) is mostly within
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A) the flow of
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Q93: Sunspots appear dark because they
A) are coronal
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Q95: A typical sunspot group lasts
A) virtually forever.
B)
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