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Earth Science Review 4 (2)
Test Description: Rock Classification
Instructions: Answer all questions to get your test result.
1) Which of the following is not a characteristic that geologists use to identify rocks?
A
color
B
size
C
mineral composition
D
texture
2) In ___________ rocks grains occur randomly throughout the rock
A
nonpatterned
B
nonbanded
C
banded
D
patterned
3) Igneous rocks with a _________ silica content form light colored rocks
A
zero
B
low
C
high
D
medium
4) A fine grained igneous rock probably formed
A
finely
B
extrusively
C
coarsely
D
intrusively
5) ________ rocks with _________ edges make up conglomerate
A
chemical; jagged
B
clastic; jagged
C
chemical; rounded
D
clastic; rounded
6) _____________ sedimentary rock forms when dissolved minerals crystallize on top of a rock
A
chemical
B
crystal
C
clastic
D
organic
7) Foliated ____________ rocks have grains arranged _______________
A
metamorphic; randomly
B
sedimentary; randomly
C
sedimentary; in parallel layers
D
metamorphic; in parallel layers
8) Which rock has a jagged grain shape?
A
metamorphic
B
breccia
C
igneous
D
conglomerate
9) Sedimentary rocks that contain fossils are called
A
clastic
B
chemical
C
crystal
D
organic
10) Intrusive igneous rocks
A
2 of the choices
B
have fine grains
C
formed by cooling rapidly
D
formed by cooling slowly
*select an answer for all questions
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