AnswersSkelton - GSN - Earth Science - SC3207 ICMetamorphic Rocks

Metamorphic Rocks Answers

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1
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The image shows metamorphic rock.

Question illustration
A
randomly arranged grains
B
formed through sedimentation
C
formed by extreme heat and pressure
D
grains that do not split into layers
2
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Which type of rock is a foliated metamorphic rock?

A
granite
B
marble
C
quartzite
D
slate
3

Which statement describes the formation of metamorphic rocks?

A
Rocks beneath the surface melt.
B
Rocks above the surface are eroded.
C
Rocks beneath the surface are forced toward the mantle.
D
Rock layers near the surface decrease pressure on layers beneath them.
5

Which describes a characteristic of quartzite?

A
igneous
B
foliated
C
does not split into layers
D
grains arranged in parallel layers
6

Which describes gneiss?

A
igneous
B
formed from shells
C
tends to split along bands
D
grains randomly arranged
7

Which describes slate?

A
non-foliated
B
igneous
C
does not split into layers
D
grains arranged in parallel layers
8

Which phrase describes foliated rocks?

A
tend to break in half
B
grains arranged randomly
C
tend to split apart along bands
D
grains arranged in increasing size
9

During the formation of metamorphic rocks, what most likely causes pressure to increase?

A
Magma pockets rise.
B
Gravity pulls on rocks.
C
Rocks melt deep beneath Earth’s surface.
D
Rocks beneath Earth’s surface are forced toward the mantle.
10

These are two metamorphic rocks.

Question illustration
A
The rock on the right is foliated.
B
The rock on the left formed from granite.
C
The rock on the left is formed from cooled magma.
D
The rock on the right has randomly arranged grains.
11

In the formation of metamorphic rocks, what effect do temperature and pressure primarily have?

A
They erode rocks.
B
They create layers.
C
They make rocks smaller.
D
They change existing minerals.
12

Which type of rock is non-foliated metamorphic rock?

A
gneiss
B
limestone
C
marble
D
slate
13

Which phrase describes a metamorphic rock?

A
formed from a volcano
B
was once buried underground
C
formed from evaporating water
D
contains minerals that have not changed
14

During the formation of metamorphic rocks, what is one event that leads to increased heat?

A
Sun warms rocks.
B
Magma pockets rise.
C
Friction occurs between sliding rocks.
D
Lava at Earth’s surface flows over rocks.
15

Which are the two agents that are necessary in the formation of metamorphic rocks?

A
erosion and heat
B
heat and lava
C
lava and pressure
D
pressure and heat

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