Question 1

At the surface of the Earth, ultramafic rocks in kimberlite pipes weather away leaving behind concentrations of _____.

Accepted Answer

A)   diamonds
B)   pearls
C)   emeralds
D)   olivine
E)   topazF) None of the above
G) A) and B)

Question 2

____ tend(s)  to weather much faster than sandstone.

Accepted Answer

A)   Shale
B)   Granite
C)   Chert
D)   Gneiss
E)   Most other rock typesF) All of the above
G) A) and C)

Question 3

The B-horizon in soil is the zone of accumulation.

Accepted Answer

A) True 
 B)False

Question 4

The single most important agent for the chemical weathering is temperature.

Accepted Answer

A) True 
 B)False

Question 5

_____ is the mineral least susceptible to chemical attack on the Earth's surface.

Accepted Answer

A)   Olivine
B)   Calcite
C)   Halite
D)   Quartz
E)   FeldsparF) A) and E)
G) A) and C)

Question 6

Water that has trickled down into a joint in a rock can freeze, expand, and _____.

Accepted Answer

A)   glue the rock more tightly together
B)   make the rock harder
C)   seal the crack thereby preventing further weathering
D)   widen the crack and hastening the rock's disintegration
E)   displace surface acids that may weaken the rockF) A) and B)
G) C) and D)

Question 7

______ is wind transported and deposited sediment.

Accepted Answer

A)   Laterite
B)   Lahar
C)   Loam
D)   Loess
E)   GelisolF) C) and D)
G) B) and E)

Question 8

Chemical weathering will eventually change a quartz crystal into clay minerals.

Accepted Answer

A) True 
 B)False

Question 9

The removal of a great weight of rock above a batholith by erosion allows the granite to expand forming ______.

Accepted Answer

A)   sheet dikes
B)   weathering rinds
C)   sheet joints
D)   cooling fractures
E)   thermal cracksF) C) and D)
G) D) and E)

Question 10

Because the crystal structure of ice is different from that of water, liquid water expands when it freezes.

Accepted Answer

A) True 
 B)False

Question 11

______ is weathered unconsolidated material on top of solid bedrock.

Accepted Answer

A)   Clay
B)   Sand
C)   Mud
D)   Dirt
E)   RegolithF) B) and E)
G) A) and C)

Question 12

All rocks chemically weather the same way.

Accepted Answer

A) True 
 B)False

Question 13

Olivine weathers rapidly because its isolated silicon-oxygen tetrahedra are held together by _________ ionic bonds to iron and magnesium.

Accepted Answer

A)   strong
B)   long
C)   weak
D)   acid resistant
E)   shortF) D) and E)
G) C) and E)

Question 14

Chemical weathering generally proceeds __.

Accepted Answer

A)   at about the same rate throughout a rock body
B)   fastest in the intact interior of a rock body, where ions easily move short distances from grain to grain
C)   fastest on flat joint (crack)  faces that are distant from any corners or edges
D)   along contacts between mineral grains
E)   fastest at the tip of growing cracks deep within the rockF) B) and D)
G) C) and D)

Question 15

Which of the following landforms are created from unloading?

Accepted Answer

A)   volcanoes
B)   pressure release domes
C)   sink holes
D)   exfoliation domes
E)   regolithF) B) and C)
G) A) and B)

Question 16

Clay minerals help hold water and clay nutrients in soil.

Accepted Answer

A) True 
 B)False

Question 17

An acid is a chemical compound that gives off hydrogen ions (H+) to a chemical reaction.

Accepted Answer

A) True 
 B)False

Question 18

___ is the picking up and physical removal of rock particles by an agent such as wind, flowing liquid water, or glaciers.

Accepted Answer

A)   Weathering
B)   Extraction
C)   Erosion
D)   Deposition
E)   ProvenanceF) B) and D)
G) A) and E)

Question 19

In tropical regions where temperatures are high and rainfall abundant, highly leached soils called _______ (oxisols)  form.

Accepted Answer

A)   laterite soil
B)   lateral soil
C)   transported soil
D)   paleosol
E)   pelagic soilF) B) and E)
G) All of the above

Question 20

Water can combine with iron oxide to form ______.

Accepted Answer

A)   silica
B)   limonite
C)   calcium, sodium, or potassium ions
D)   galena
E)   hydrogen ionsF) B) and C)
G) None of the above

Exam 5: Weathering and Soil

______ is weathered unconsolidated material on top of solid bedrock.

Correct AnswerverifiedShow Answer

____ tend(s) to weather much faster than sandstone.

Correct AnswerverifiedShow Answer

_____ is the mineral least susceptible to chemical attack on the Earth's surface.

Correct AnswerverifiedShow Answer

In tropical regions where temperatures are high and rainfall abundant, highly leached soils called _______ (oxisols) form.

Correct AnswerverifiedShow Answer

At the surface of the Earth, ultramafic rocks in kimberlite pipes weather away leaving behind concentrations of _____.

Correct AnswerverifiedShow Answer

An acid is a chemical compound that gives off hydrogen ions (H+) to a chemical reaction.

Correct AnswerverifiedShow Answer

______ is wind transported and deposited sediment.

Correct AnswerverifiedShow Answer

Chemical weathering will eventually change a quartz crystal into clay minerals.

Correct AnswerverifiedShow Answer

Which of the following landforms are created from unloading?

Correct AnswerverifiedShow Answer

Water can combine with iron oxide to form ______.

Correct AnswerverifiedShow Answer

All rocks chemically weather the same way.

Correct AnswerverifiedShow Answer

Clay minerals help hold water and clay nutrients in soil.

Correct AnswerverifiedShow Answer

___ is the picking up and physical removal of rock particles by an agent such as wind, flowing liquid water, or glaciers.

Correct AnswerverifiedShow Answer

Chemical weathering generally proceeds __.

Correct AnswerverifiedShow Answer

The B-horizon in soil is the zone of accumulation.

Correct AnswerverifiedShow Answer

The removal of a great weight of rock above a batholith by erosion allows the granite to expand forming ______.

Correct AnswerverifiedShow Answer

Olivine weathers rapidly because its isolated silicon-oxygen tetrahedra are held together by _________ ionic bonds to iron and magnesium.

Correct AnswerverifiedShow Answer

The single most important agent for the chemical weathering is temperature.

Correct AnswerverifiedShow Answer

Because the crystal structure of ice is different from that of water, liquid water expands when it freezes.

Correct AnswerverifiedShow Answer

Water that has trickled down into a joint in a rock can freeze, expand, and _____.

Correct AnswerverifiedShow Answer

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

An acid is a chemical compound that gives off hydrogen ions (H⁺) to a chemical reaction.

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified