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7th Grade, Unit 3-rocks
Test Description: Unit 3
Instructions: Answer all questions to get your test result.
1) The three groups of rock are sedimentary, metamorphic, and
A
coal
B
granite
C
igneous
D
limestone
2) The rock cycle shows how rocks continually
A
increase in number
B
change over time
C
become more complex
D
increase in size
3) Which kind of rock forms when molten rock cools?
A
extrusive
B
igneous
C
metamorphic
D
sedimentary
4) An existing rock can change into another type of rock when it is subjected to great
A
flooding
B
winds
C
pressure
D
foliation
5) Which kind of rock forms by recrystallization?
A
sedimentary
B
metamorphic
C
extrusive igneous
D
intrusive igneous
6) Geologists classify igneous rock on the basis of its crystal size and the amount of ______________________ its minerals contain.
A
carbon
B
foliation
C
silica
D
sediment
7) Pieces of rock can settle from water and get cemented into
A
metamorphic rock
B
extrusive rock
C
sedimentary rock
D
igneous rock
8) Rock salt is an example of a sedimentary rock that develops from dissolved minerals as
A
magma cools
B
water evaporates
C
sediments break down
D
sand settles in water
9) What is the difference between a rock and a mineral?
A
rocks do not contain minerals
B
minerals have orderly structure and rocks do not
C
Minerals are made out of rocks
D
they are the same
10) The texture of igneous rock is related to the rate at which it cooled. If the rock cools slowly, _________ crystals form
A
medium
B
any size
C
small
D
large
11) The texture of igneous rock is related to the rate at which it cooled. If the rock cools quickly, _________ crystals form
A
small
B
any size
C
large
D
medium
12) if you found a fossil, which type of rock would you know it is?
A
extrusive
B
sedimentary
C
metamorphic
D
igneous
13) what happens during Sedimentation?
A
rocks are put under high pressure
B
rock is broken down into smaller pieces
C
Particles were left behind and slowly pressed together
D
lava cools quickly into igneous rock
14) what does it look like if a rock is foliated?
A
The rock has metallic luster
B
The rock has been imprinted with a fossil
C
The rock is broken on flat surfaces
D
The different minerals form bands in the rock
15) which type of rock would you find At the bottom of a large lake?
A
metamorphic
B
igneous
C
extrusive
D
sedimentary
16) which rock type would you find in Older rock surrounding an igneous intrusion
A
metamorphic
B
igneous
C
sedimentary
D
extrusive
17) which type of rock would you find at A lava flow from a volcano
A
igneous
B
sedimentary
C
metamorphic
D
intrusive
18) which type of rock would you find in a part of the surface that was once deep within a mountain range
A
sedimentary
B
extrusive
C
metamorphic
D
igneous
19) which type of rock would you find in the sides of a cave?
A
metamorphic
B
igneous
C
sedimentary
D
extrusive
20) A rock that contains traces of a once living thing is called a
A
mineral
B
gem
C
fossil
D
igneous rock
*select an answer for all questions
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