Metamorphic Rocks — Unit test Answers

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1
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What is magma?

s
solid rock with a fine texture
c
cooled rock with large crystals
m
molten rock below Earth’s surface
f
flowing rock above Earth’s surface
3

This is Mohs hardness scale.

Question illustration
A
apatite, quartz, fluorite, talc
B
diamond, talc, fluorite, topaz
C
talc, calcite, orthoclase, diamond
D
corundum, quartz, calcite, gypsum
5

Which is one source from which metamorphic rocks form?

A
soil particles
B
igneous rock
C
molten material
D
sand particles
6

Where are extrusive igneous rocks typically found?

A
in a canyon
B
in a riverbed
C
near a dormant volcano
D
deep under Earth’s surface
8

Which process forms sedimentary rock in the rock cycle after sediments accumulate and combine?

A
Sediments undergo heat and pressure.
B
Sedimentary rock weathers and erodes.
C
Sediments compact and cement together.
D
Sedimentary rock experiences cooling and melting.
9

Which statement is an example of an observation a scientist would make to classify a rock?

A
A rock is larger than other rocks.
B
A rock was found in a stream.
C
A rock is formed from molten lava.
D
A rock cracks in half after a rainstorm.
12

Which correctly lists three characteristics of minerals?

s
solid, crystal structure, definite chemical composition
o
organic, crystal structure, definite chemical composition
h
human-made, solid, organic
c
crystal structure, definite chemical composition, human-made
13

Which characteristic is used to classify metamorphic rocks as foliated or non-foliated?

A
grain size
B
layer thickness
C
arrangement of layers
D
arrangement of grains
14

Which phrase best describes igneous rocks?

A
form when lava and magma cool
B
accumulate sediments following erosion
C
require heat and pressure to be formed
D
consist of many sediment layers

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