Focus On Physical Science: California Grade 8

Chapter 12: Stars and Galaxies

Math Practice

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1.
How much brighter is Achernar than Procyon?
A)1.08
B)0.08
C)0.92
D)2.5
2.
How much brighter is Achernar than Capella?
A)1.42
B)0.42
C)0.58
D)2.5
3.
How much brighter is Betelgeuse than Rigel?
A)2.5
B)1.38
C)0.42
D)1.42
4.
How much brighter is Altair than Betelgeuse?
A)2.5
B)0.27
C)0.28
D)1.28
5.
How much brighter is Altair than Rigel?
A)0.81
B)0.65
C)1.81
D)2.5
6.
How much brighter is Pollux than Altair?
A)0.37
B)0.4
C)1.4
D)2.5
7.
How much brighter is Pollux than Betelgeuse?
A)0.64
B)1.8
C)0.8
D)2.5
8.
How much brighter is Pollux than Rigel?
A)0.55
B)2.55
C)1.02
D)2.5
9.
How much brighter is Deneb than Pollux?
A)1.11
B)0.11
C)0.89
D)2.5
10.
How much brighter is Deneb than Betelgeuse?
A)1.99
B)0.99
C)0.75
D)2.5
Grade 8
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