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Classifying Rocks
Test Description: Review
Instructions: Answer all questions to get your test result.
1) How many rock-forming minerals make up rocks?
A
20
B
2,000
C
2
D
200
2) Light-colored rock with high silica content describes
A
granite
B
breccia
C
quartz
D
quartzite
3) Which is a kind of rock that forms when heat or pressure change a sedimentary rock?
A
inorganic
B
metamorphic
C
organic
D
igneous
4) Which term describes how a rock's surface looks and feels?
A
density
B
fracture
C
streak
D
texture
5) ________ alone does not provide enough information to identify a rock.
A
color
B
luster
C
streak
D
texture
6) To study a rock sample, geologists observe the rock's mineral composition, color, and ______.
A
texture
B
origin
C
color
D
temperature
7) The way in which each of the three major broups of rocks forms is ____.
A
not studied
B
the same
C
unknown
D
different
8) A rock's ____ give the rock its texture.
A
density
B
taste
C
color
D
grains
9) Rocks that have large grains you can easily see are described as ____ grained.
A
rounded
B
banded
C
fine
D
coarse
10) Rocks that are ______ have grains that lie in a pattern of flat layers or form swirls.
A
banded
B
coarse
C
nonbanded
D
fine
*select an answer for all questions
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