Ch 25 1/2: Question Preview (ID: 2016)


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A star with a surface temperature between 5000K and 6000K appears
a) blue b) red c) yellow d) white
A light year is approximately
a) 9.5 trillion kms b) 95 trillion kms c) 150 million kms d) 150 billion kms
The measure of a star's brightness is called its
a) magnitude b) parallax c) intensity d) color index
Which magnitude would be associated iwth the brightest star
a) 15 b) 10 c) 5 d) -5
The difference in the brightness of two stars with the same surface temperature is attributable to their
a) densities b) colors c) ages d) sizes
Which of the following is NOT a type of neburla
a) reflection b) emission c) spiral d) dark
Aboaut 90 percent of stars in the HR diagram are
a) supergiants b) main sequence stars c) white dwarfs d) black holes
Which main sequence stars are the most massive
a) red b) orange c) yellow d) blue
Which main sequence stars are the least massive
a) red b) orange c) yellow d) blue
Another name for the interstellar matter that will eventually form a star is
a) supernova b) red giant c) black hole d) nebula
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