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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
igneous
C
limestone
D
granite
2) The rock cycle shows how rocks continually
A
increase in number
B
become more complex
C
change over time
D
increase in size
3) Which kind of rock forms when molten rock cools?
A
igneous
B
sedimentary
C
extrusive
D
metamorphic
4) An existing rock can change into another type of rock when it is subjected to great
A
pressure
B
foliation
C
flooding
D
winds
5) Which kind of rock forms by recrystallization?
A
sedimentary
B
extrusive igneous
C
intrusive igneous
D
metamorphic
6) Geologists classify igneous rock on the basis of its crystal size and the amount of ______________________ its minerals contain.
A
foliation
B
carbon
C
sediment
D
silica
7) Pieces of rock can settle from water and get cemented into
A
metamorphic rock
B
sedimentary rock
C
extrusive 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
they are the same
D
Minerals are made out of rocks
10) The texture of igneous rock is related to the rate at which it cooled. If the rock cools slowly, _________ crystals form
A
large
B
any size
C
small
D
medium
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
medium
C
any size
D
large
12) if you found a fossil, which type of rock would you know it is?
A
extrusive
B
metamorphic
C
igneous
D
sedimentary
13) what happens during Sedimentation?
A
rock is broken down into smaller pieces
B
lava cools quickly into igneous rock
C
Particles were left behind and slowly pressed together
D
rocks are put under high pressure
14) what does it look like if a rock is foliated?
A
The rock is broken on flat surfaces
B
The different minerals form bands in the rock
C
The rock has been imprinted with a fossil
D
The rock has metallic luster
15) which type of rock would you find At the bottom of a large lake?
A
sedimentary
B
extrusive
C
metamorphic
D
igneous
16) which rock type would you find in Older rock surrounding an igneous intrusion
A
metamorphic
B
extrusive
C
sedimentary
D
igneous
17) which type of rock would you find at A lava flow from a volcano
A
intrusive
B
metamorphic
C
igneous
D
sedimentary
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
igneous
D
metamorphic
19) which type of rock would you find in the sides of a cave?
A
sedimentary
B
metamorphic
C
extrusive
D
igneous
20) A rock that contains traces of a once living thing is called a
A
igneous rock
B
fossil
C
gem
D
mineral
*select an answer for all questions
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