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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
mineral composition
B
size
C
color
D
texture
2) In ___________ rocks grains occur randomly throughout the rock
A
nonpatterned
B
nonbanded
C
patterned
D
banded
3) Igneous rocks with a _________ silica content form light colored rocks
A
low
B
high
C
zero
D
medium
4) A fine grained igneous rock probably formed
A
coarsely
B
extrusively
C
intrusively
D
finely
5) ________ rocks with _________ edges make up conglomerate
A
clastic; rounded
B
clastic; jagged
C
chemical; jagged
D
chemical; rounded
6) _____________ sedimentary rock forms when dissolved minerals crystallize on top of a rock
A
crystal
B
chemical
C
organic
D
clastic
7) Foliated ____________ rocks have grains arranged _______________
A
sedimentary; randomly
B
metamorphic; in parallel layers
C
metamorphic; randomly
D
sedimentary; in parallel layers
8) Which rock has a jagged grain shape?
A
conglomerate
B
breccia
C
igneous
D
metamorphic
9) Sedimentary rocks that contain fossils are called
A
chemical
B
organic
C
clastic
D
crystal
10) Intrusive igneous rocks
A
2 of the choices
B
formed by cooling slowly
C
have fine grains
D
formed by cooling rapidly
*select an answer for all questions
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