Focus On Earth Science: California Grade 6

Chapter 4: Plate Tectonics

Math Practice

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1
How much more olivine is found in peridotite than in basalt?
A)55%
B)70%
C)15%
D)85%
2
How much more olivine is found in peridotite than in gabbro?
A)70%
B)45%
C)25%
D)95%
3
How much more sodium feldspar is found in diorite than in granite?
A)65%
B)50%
C)15%
D)35%
4
How much more biotite is found in granite than in diorite?
A)10%
B)0%
C)20%
D)30%
5
How much more orthoclase feldspar is found in granite than in diorite?
A)50%
B)60%
C)10%
D)40%
6
How much more pyroxene is found in gabbro than in peridotite?
A)80%
B)30%
C)25%
D)55%
7
What percentage of granite is made of feldspar?
A)65%
B)50%
C)15%
D)35%
8
What percentage of diorite is made of feldspar?
A)10%
B)50%
C)60%
D)40%
9
What percentage of diorite is made of quartz and biotite?
A)30%
B)10%
C)20%
D)40%
10
What percentage of granite is made of quartz and biotite?
A)35%
B)20%
C)15%
D)5%
Grade 6
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