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