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Ch 25 1/2
Test Description: 1/2
Instructions: Answer all questions to get your test result.
1) A star with a surface temperature between 5000K and 6000K appears
A
white
B
blue
C
red
D
yellow
2) A light year is approximately
A
95 trillion kms
B
9.5 trillion kms
C
150 million kms
D
150 billion kms
3) The measure of a star's brightness is called its
A
color index
B
magnitude
C
parallax
D
intensity
4) Which magnitude would be associated iwth the brightest star
A
15
B
10
C
5
D
-5
5) The difference in the brightness of two stars with the same surface temperature is attributable to their
A
ages
B
densities
C
colors
D
sizes
6) Which of the following is NOT a type of neburla
A
reflection
B
spiral
C
dark
D
emission
7) Aboaut 90 percent of stars in the HR diagram are
A
supergiants
B
main sequence stars
C
black holes
D
white dwarfs
8) Which main sequence stars are the most massive
A
red
B
blue
C
orange
D
yellow
9) Which main sequence stars are the least massive
A
orange
B
yellow
C
blue
D
red
10) Another name for the interstellar matter that will eventually form a star is
A
red giant
B
black hole
C
nebula
D
supernova
*select an answer for all questions
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