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WorksheetsMidterm Review (Rocks - Weathering)
Total questions: 20
Worksheet time: 37mins
Name
Class
Date
1.
Rocks are classified according to
a)
how they formed.
b)
when they formed.
c)
the minerals that make them up.
d)
how old they are.
2.
If granite undergoes high temperatures and high pressures at depth within Earth, what type of
rock will be formed? Assume that the granite does not melt.
rock will be formed? Assume that the granite does not melt.
a)
Metamorphic
b)
Sedimentary
c)
Igneous
d)
Lava
3.
A rock that forms when magma hardens beneath Earth’s surface is called an ____.
a)
Intrusive Igneous Rock
b)
Clastic Sedimentary Rock
c)
Foliated Metamorphic Rock
d)
Extrusive Igneous Rock
4.
A rock that forms from cooling lava is classified as an ____.
a)
intrusive igneous rock
b)
extrusive igneous rock
c)
extrusive metamorphic rock
d)
intrusive volcanic rock
5.
As the rate of cooling of igneous rocks decreases, the size of the crystals that form ____.
a)
increases
b)
decreases
c)
stays the same
d)
melts
6.
According to the diagram, which of the following is responsible for the formation of bituminous coal?
a)
weathering and erosion
b)
cooling of magma
c)
compaction of plant materials
d)
recrystallization from high temperatures and high pressures
7.
According to the diagram, which of the following rocks is composed of fine to coarse crystalline Halite (NaCl)?
a)
Rock Salt
b)
Rock Gypsum
c)
Bituminous Coal
d)
Conglomerate
8.
Fossils are only found in ____.
a)
Sedimentary Rocks
b)
Metamorphic Rocks
c)
Igneous Rocks
9.
What rock-forming process occurs in an area of mountain building?
a)
regional metamorphism
b)
biochemical sedimentation
c)
contact metamorphism
d)
deposition
10.
The texture of an igneous rock __________.
a)
is controlled by the composition of magma
b)
determines the color of the rock
c)
is caused by leaching
d)
records the rock’s cooling history
11.
All of the following are factors that affect rates of weathering except for __________.
a)
rock characteristics
b)
climate
c)
surface area
d)
geologic age of earth materials
12.
Which one of the following statements concerning mechanical weathering is not true?
a)
reduces grain sizes of rock particles
b)
allows for faster rates of chemical weathering
c)
is important in the formation of talus slopes
d)
involves a major change in the mineral composition of the weathered material
13.
Which one of the following statements best describes erosion?
a)
disintegration and decomposition of rocks and minerals at the surface
b)
movement of weathered rock and regolith toward the base of a slope
c)
the process by which weathered rock and mineral particles are removed from one area and
transported elsewhere
transported elsewhere
d)
the combined processes of leaching, eluviation, and mass wasting
14.
Assume that water filling a crack in a rock undergoes cycles of freezing and melting. Which of the following statement is true?
a)
water expands as it melts, causing the crack walls to be pushed apart
b)
water shrinks as it freezes, causing the crack walls to be drawn closer together
c)
water expands as it freezes, causing the crack walls to be pushed apart
d)
water shrinks as it melts, causing the crack walls to be pulled closer together
15.
Which statement best describes slumping, a mass wasting process?
a)
a block or blocks of unconsolidated regolith slide downhill along a curved slip surface
b)
blocks of hard bedrock rapidly slide downhill along fracture surfaces
c)
the soil and regolith move downhill very slowly
d)
a mass of soil or regolith becomes saturated with water and suddenly flows downhill to the
base of the slope
base of the slope
16.
What two factors speed up rates of chemical reaction and weathering in rocks and soils?
a)
low temperatures; very dry
b)
high temperatures; very dry
c)
low temperatures; very moist
d)
warm temperatures; very moist
17.
What type of weathering occurs when the average temperature is 0 degrees and an annual precipitation of 50?
a)
Slight Mechanical
b)
Strong Chemical
c)
Moderate Chemical w/ Frost Action
d)
Moderate Chemical
18.
Which rock layer appears to be the most resistant to weathering?
a)
Limestone
b)
Sandstone
c)
Shale
19.
In which area would weathering by frost wedging probably be most effective?
a)
in a moist, tropical forest
b)
where the soil is permanently frozen
c)
in cool high desert areas
d)
in moist, temperate climates
20.
As a particle of sediment in a stream breaks into several smaller pieces, the rate of weathering of
the sediment will:
the sediment will:
a)
increase due to a decrease in surface area
b)
decrease due to an increase in surface area
c)
increase due to an increase in surface area
d)
decrease due to a decrease in surface area
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