an "average" star in our galaxy is
A a red giant
B a star on the lower end of the main sequence
C a star on the upper end of the main sequence
D a white dwarf
the most common type of star in our galaxy is
A cooler and brighter than the sun
B cooler and fainter than the sun
C hotter and brighter than the sun
D hotter and fainter than the sun
the most common stars are
A supergiants.
B giants.
C upper main-sequence stars and supergiants.
D lower main-sequence stars and white dwarfs.
the actual brightness of the nearby stars, compared to the sun's, is
A usually lower
B about the same
C usually greater
D widely, but equally, spread about the sun's
most stars in our part of the galaxy are relatively
A cool and bright
B cool and faint
C hot and bright
D hot and faint
a graph of apparent brightness versus color for the nearby stars would
A be very useful in determining their characteristics
B would not be useful because they are at different distances
C would not be useful because color is not a useful parameter
D would not be useful without detailed knowledge of their spectra
in the H-R diagram the apparently bright stars are
A indistinguishable from the near stars
B fainter and cooler than the near stars
C brighter and cooler than the near stars
D brighter and hotter than the near stars.
bright stars in the sky tend to be
A very old
B relatively nearby
C in the upper part of the H-R diagram
D in the lower part of the H-R diagram
most of the stars in our galaxy are
A young
B very bright
C relatively hot
D cool and faint
in the H-R diagram, the nearby stars
A fall near the upper end of the main sequence
B fall near the lower end of the main sequence
C are mostly above the main sequence
D are mostly below the main sequence
the stars which appear bright in the sky are
A typical of all stars
B cooler than most stars
C brighter than most stars
D older than most stars
an H-R diagram of the nearby stars shows that
A no pattern is detectable
B many are seen in the red giant region
C most are scattered evenly along the main sequence
D most are scattered along the lower half of the main sequence
compared to the nearby stars, the apparently brightest stars in the sky are actually systematically
A cooler and brighter
B cooler and fainter
C hotter and brighter
D hotter and fainter
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