Question 1

Podzolic soils are solely associated with the northern coniferous forest and are never found within mixed or deciduous forests.

Accepted Answer

A) True 
 B)False

Question 2

What are some of the concerns regarding the rate and amount of soil erosion.What does a cost benefit analysis of soil loss prevention show?

Accepted Answer

Soil erosion is the breakdown,detachment...

Question 3

Ped formation enhances which of the following?

Accepted Answer

A)  Soil texture.
B)  Permeability.
C)  Soil horizons.
D)  Plasticity.E) B) and C)
F) A) and C)

Question 4

Which of the following are examples of soil forming factors?

Accepted Answer

A)  Surface relief,worms and bacteria.
B)  Worms,bacteria and lithification.
C)  Bacteria,lithification and rainfall.
D)  Rainfall,lithification and surface relief.E) All of the above
F) C) and D)

Question 5

Which of the following is not a physical property used to distinguish soils?

Accepted Answer

A)  Colour.
B)  Texture.
C)  Porosity.
D)  Temperature.E) A) and D)
F) None of the above

Question 6

Which of the following soils would have limited horizon development and would be destructive of buildings and roads?

Accepted Answer

A)  Brunisolic.
B)  Vertisolic.
C)  Chernozemic.
D)  Solonetzic.E) All of the above
F) C) and D)

Question 7

What are the five primary soil forming factors? Describe each using examples.

Accepted Answer

Parent material,climate,biological activ...

Question 8

The horizon in which water moves fine particles downward in a process called eluviation is which horizon?

Accepted Answer

A)  
A)  
B)  O) 
C)  Ae.
D)  
B)  E) None of the above
F) All of the above

Question 9

Where would one likely find the deepest soil development?

Accepted Answer

A)  On steep slopes.
B)  Level or nearly level grounds.
C)  Moderately sloping,south facing hills.
D)  Over the oldest geological formations in an area,regardless of slope.E) A) and D)
F) A) and C)

Question 10

Which of the following is not one of the five primary soil-forming factors?

Accepted Answer

A)  Topography.
B)  Climate.
C)  Human activity.
D)  Biological activity.E) None of the above
F) All of the above

Question 11

Which of the following best describes the role of biological activity in soil development?

Accepted Answer

A)  Broadleaf trees tend to increase the alkalinity of soil,whereas needleleaf trees increase the acidity.
B)  Earthworms increase soil porosity and contribute to soil movement and organic content.
C)  Plant roots provide channels for air and water movement in soils.
D)  All organisms living in,on,and over the soil,influence soil development and characteristics: they can influence the pH,the organic matter,chemical content,and biological content of soils.E) A) and B)
F) B) and D)

Question 12

Soil structure can be defined by which of the following?

Accepted Answer

A)  Crumb or granular.
B)  Blocky or straight.
C)  Prismatic or flat.
D)  Platy or compressed.E) C) and D)
F) B) and D)

Question 13

Which is the branch of soil science that studies soil as a medium for sustaining the growth of higher plants?

Accepted Answer

A)  Pedology.
B)  Edaphology.
C)  Geology.
D)  Geomorphology.E) B) and C)
F) A) and D)

Question 14

A high cation-exchange capacity (CEC)tends to indicate poor soil fertility.

Accepted Answer

A) True 
 B)False

Question 15

Contrast the soil beneath broadleaf trees with that beneath conifers.How do the soils compare?

Accepted Answer

A)  Broadleaf trees tend to make the soil more acidic; conifers tend to make it more alkaline.
B)  Broadleaf trees tend to make the soil more alkaline; conifers tend to make it more acidic.
C)  Broadleaf trees tend to make the soil more acidic; conifers tend to make it more neutral.
D)  Broadleaf trees tend to make the soil more neutral; conifers tend to make it more acidic.E) A) and C)
F) A) and B)

Question 16

Which are recent,undeveloped soils?

Accepted Answer

A)  Vertisolic.
B)  Solonetzic.
C)  Regosolic.
D)  Gleysolic.E) B) and C)
F) All of the above

Question 17

What do you think are the biggest challenges related to soil conservation and management in the coming decades?

Accepted Answer

Answers will vary.However,they may inclu...

Question 18

In addition to designation of horizons,soil scientists also designate subhorizons,for instance,indicating human activity or presence of organic matter.

Accepted Answer

A) True 
 B)False

Question 19

Which of the following best describes the composition of soil?

Accepted Answer

A)  Soil is primarily mineral matter (approximately 72%) ,but also consists of organic matter (10%) ,and water (18%) .
B)  Soil consists of approximately 45% organic matter,50% mineral matter,and 5% water and/or air.
C)  Soil is composed of about 45% mineral matter,5% organic matter,and 50% pore space containing air and water.
D)  Soil includes pebbles,gravel,cobbles,and a varying combination of sands,silts,and clays.E) B) and D)
F) All of the above

Question 20

Regisolic soils (Entisols)are the least developed soils in the world.

Accepted Answer

A) True 
 B)False

Exam 18: The Geography of Soils

Contrast the soil beneath broadleaf trees with that beneath conifers.How do the soils compare?

Correct AnswerverifiedShow Answer

Which of the following soils would have limited horizon development and would be destructive of buildings and roads?

Correct AnswerverifiedShow Answer

Ped formation enhances which of the following?

Correct AnswerverifiedShow Answer

Which are recent,undeveloped soils?

Correct AnswerverifiedShow Answer

Which of the following are examples of soil forming factors?

Correct AnswerverifiedShow Answer

Which of the following best describes the role of biological activity in soil development?

Correct AnswerverifiedShow Answer

A high cation-exchange capacity (CEC)tends to indicate poor soil fertility.

Correct AnswerverifiedShow Answer

Podzolic soils are solely associated with the northern coniferous forest and are never found within mixed or deciduous forests.

Correct AnswerverifiedShow Answer

Soil structure can be defined by which of the following?

Correct AnswerverifiedShow Answer

What are the five primary soil forming factors? Describe each using examples.

Correct AnswerverifiedParent material,climate,biological activ...View AnswerShow Answer

Which of the following is not one of the five primary soil-forming factors?

Correct AnswerverifiedShow Answer

Which of the following is not a physical property used to distinguish soils?

Correct AnswerverifiedShow Answer

The horizon in which water moves fine particles downward in a process called eluviation is which horizon?

Correct AnswerverifiedShow Answer

What do you think are the biggest challenges related to soil conservation and management in the coming decades?

Correct AnswerverifiedAnswers will vary.However,they may inclu...View AnswerShow Answer

In addition to designation of horizons,soil scientists also designate subhorizons,for instance,indicating human activity or presence of organic matter.

Correct AnswerverifiedShow Answer

Which is the branch of soil science that studies soil as a medium for sustaining the growth of higher plants?

Correct AnswerverifiedShow Answer

Where would one likely find the deepest soil development?

Correct AnswerverifiedShow Answer

Which of the following best describes the composition of soil?

Correct AnswerverifiedShow Answer

What are some of the concerns regarding the rate and amount of soil erosion.What does a cost benefit analysis of soil loss prevention show?

Correct AnswerverifiedSoil erosion is the breakdown,detachment...View AnswerShow Answer

Regisolic soils (Entisols)are the least developed soils in the world.

Correct AnswerverifiedShow Answer

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Parent material,climate,biological activ...
View Answer

Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
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Answers will vary.However,they may inclu...
View Answer

Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
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Soil erosion is the breakdown,detachment...
View Answer

Correct Answer
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