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2 The range of stellar surface temperatures spans about a factor of ___ . A 504 B 2 C 100 4 Main sequence stars can be A cool and very large in size....
2 The range of stellar surface temperatures spans about a factor of ___ .
A 504
B 2
C 100
4 Main sequence stars can be
A cool and very large in size.
B hot and intrinsically highly luminous
C hot and intrinsically dim
D cool and intrinsically highly luminous
5 The vertical axis of the Hertzsprung-Russell Diagram measures
A how much light leaves a star's surface.
B how hot the core of the star is.
C the radius of a star.
D the color of a star.
11 Spectral classes first organized the characteristics of stars according to
A hydrogen absorption features in the spectrum.
B iron absorption features in the spectrum.
C stellar size.
D stellar mass.