Rocks and the Rock Cycle — Unit test Answers

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Which two processes are destructive forces that occur during sedimentary rock formation?

A
cementation and compaction
B
compaction and deposition
C
deposition and weathering
D
weathering and erosion
2
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Which rocks will likely weather the least?

A
rocks that are soft
B
rocks with a porous surface
C
rocks that are in a dry climate
D
rocks with minerals that dissolve easily
3

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
4

A loose pile of rocks and soil travels in a single large mass. The mass moves a short distance downhill.Which mass movement does this describe?

A
creep
B
erosion
C
landslide
D
slump
5

Which term describes erosion?

A
creates small particles
B
hardens rock fragments
C
transports solid materials
D
dissolves rock components
6

Which event can cause slumps, landslides, and mudflows to occur?

A
earthquakes
B
hurricanes
C
snowfalls
D
thunderstorms
7

A small, jagged particle with a density of 1.2 g/cm3 deposits on the ground before a large, round particle with a density of 0.82 g/cm3.Which most likely influences the rate of deposition of the jagged particle?

A
large size
B
low density
C
high density
D
irregular shape
8

Which is one source of the sediments that form sedimentary rocks?

A
chunks of coal
B
particles in new rocks
C
liquid magma
D
materials dissolved in solutions
9

Study the image of this rock.

Question illustration
A
jagged
B
oval
C
round
D
smooth
10

Which is one of the main categories of sedimentary rocks?

A
clastic
B
limestone
C
shale
D
sandstone
11

Which event occurs after Earth’s surface experiences weathering?

A
Wind carries sediments to a new location.
B
Ice forms cracks in large rocks.
C
Moving water breaks sediments into pieces.
D
Surface materials wear down into sediment.
12

A rock is found in an area that once had an active volcano and has since been affected by erosion. The rock has individual black and white crystals that are easy to see.Which other description fits the rock?

A
fine texture
B
cooled quickly
C
exposed to air and water
D
cooled inside the volcano
13

Which is one source from which metamorphic rocks form?

A
soil particles
B
igneous rock
C
molten material
D
sand particles
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
15

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

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