Question 1

Which of the following refers to a low pH condition?

Accepted Answer

A) 9)5 pH 
B) alkaline 
C) basic 
D) acidic 
E) neutral 
A) 9)5 pH 
B) alkaline 
C) basic 
D) acidic 
E) neutral

Question 2

Which of the following is true?

Accepted Answer

A) soil erosion is under control throughout most of the densely inhabited regions of the world. 
B) soil that has eroded will be replaced by natural processes in decades. 
C) loss of soil,combined with exponential population growth,could lead to serious food shortages. 
D) both the direct and indirect costs of soil erosion is estimated at hundreds of thousands of dollars worldwide. 
E) there are no government agencies monitoring soil erosion in North America. 
A) soil erosion is under control throughout most of the densely inhabited regions of the world. 
B) soil that has eroded will be replaced by natural processes in decades. 
C) loss of soil,combined with exponential population growth,could lead to serious food shortages. 
D) both the direct and indirect costs of soil erosion is estimated at hundreds of thousands of dollars worldwide. 
E) there are no government agencies monitoring soil erosion in North America.

Question 3

The basic soil unit used in preparing soils maps i.e. ,in identifying a series of soils in an area,is the

Accepted Answer

A) polypedon. 
B) profile. 
C) A horizon. 
D) pedon. 
E) solum. 
A) polypedon. 
B) profile. 
C) A horizon. 
D) pedon. 
E) solum.

Question 4

Clay colloids have negative charges on their surfaces and attract positively charged ions from the soil solution.

Accepted Answer

A) True 
 B)False

Question 5

Discuss the natural and human factors involved with soil formation and management.

Accepted Answer

Soil formation is a complex process that

Question 6

A mixture of decomposed organic matter in soil that is usually dark in colour is called

Accepted Answer

A) regolith. 
B) polypedon. 
C) humus. 
D) mineral matter. 
E) illuvium. 
A) regolith. 
B) polypedon. 
C) humus. 
D) mineral matter. 
E) illuvium.

Question 7

Which of the following soil layers would usually contain the greatest amount of clay in a well-developed soil?

Accepted Answer

A) A 
B) B 
C) C 
D) O 
E) R 
A) A 
B) B 
C) C 
D) O 
E) R

Question 8

Peds increase the porosity and permeability of a soil,and therefore benefit the soil.

Accepted Answer

A) True 
 B)False

Question 9

Chernozemic soils are associated with

Accepted Answer

A) the greatest timber harvests in the world. 
B) the greatest grain harvests in the world. 
C) floodplains. 
D) intense leaching. 
E) water-logged soils. 
A) the greatest timber harvests in the world. 
B) the greatest grain harvests in the world. 
C) floodplains. 
D) intense leaching. 
E) water-logged soils.

Question 10

Discuss the important aspects of soil chemistry and pH,including how they affect soil fertility.

Accepted Answer

Soil chemistry and pH play crucial roles

Question 11

Recent compilations of data from around the world show

Accepted Answer

A) that soil erosion under conventional agriculture exceeds both the rates of soil production and geological erosion rates by several orders of magnitude. 
B) that soil erosion,once a problem for all,is now under control in many countries. 
C) that soil erosion is greatest in arid countries where there are annual water deficits. 
D) that the southern hemisphere has learned to manage soil erosion,while in the northern hemisphere it is still a major problem. 
E) that agricultural management regulations in Europe have slowed soil erosion significantly while it continues to accelerate in North America. 
A) that soil erosion under conventional agriculture exceeds both the rates of soil production and geological erosion rates by several orders of magnitude. 
B) that soil erosion,once a problem for all,is now under control in many countries. 
C) that soil erosion is greatest in arid countries where there are annual water deficits. 
D) that the southern hemisphere has learned to manage soil erosion,while in the northern hemisphere it is still a major problem. 
E) that agricultural management regulations in Europe have slowed soil erosion significantly while it continues to accelerate in North America.

Question 12

A dark coloured soil is usually rich in organic matter.

Accepted Answer

A) True 
 B)False

Question 13

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

Accepted Answer

Some of the concerns regarding the rate

Question 14

Vertisolic soils have several very distinct horizons.

Accepted Answer

A) True 
 B)False

Question 15

Irrigation of arid lands can destroy the soil.

Accepted Answer

A) True 
 B)False

Question 16

Cryosolic soils are most common in the middle latitudes.

Accepted Answer

A) True 
 B)False

Question 17

Choose and describe one of the following soil forming process: laterization salinization calcification podzolization gleificiation.Where does it occur? What are the processes involved?

Accepted Answer

One of the soil forming processes is lat

Question 18

Weathered bedrock or weathered parent material (regolith),excluding the unweathered bedrock itself,is designated the ________ horizon.

Accepted Answer

A) A 
B) B 
C) C 
D) O 
E) R 
A) A 
B) B 
C) C 
D) O 
E) R

Question 19

Cryosolic soils are most likely to be found in

Accepted Answer

A) northern Canada. 
B) Arizona. 
C) Panama. 
D) Greece. 
E) South Africa 
A) northern Canada. 
B) Arizona. 
C) Panama. 
D) Greece. 
E) South Africa

Question 20

The principal natural soil-forming factors

Accepted Answer

A) are static in nature. 
B) include climate,parent material,topography,biotic processes,and time. 
C) are all inorganic. 
D) include peds,separates,solums,and horizons. 
E) include insolation,net radiation,atmospheric temperature,and water. 
A) are static in nature. 
B) include climate,parent material,topography,biotic processes,and time. 
C) are all inorganic. 
D) include peds,separates,solums,and horizons. 
E) include insolation,net radiation,atmospheric temperature,and water.

Exam 18: The Geography of Soils

Which of the following refers to a low pH condition?

Which of the following is true?

The basic soil unit used in preparing soils maps i.e. ,in identifying a series of soils in an area,is the

Clay colloids have negative charges on their surfaces and attract positively charged ions from the soil solution.

Discuss the natural and human factors involved with soil formation and management.

A mixture of decomposed organic matter in soil that is usually dark in colour is called

Which of the following soil layers would usually contain the greatest amount of clay in a well-developed soil?

Peds increase the porosity and permeability of a soil,and therefore benefit the soil.

Chernozemic soils are associated with

Discuss the important aspects of soil chemistry and pH,including how they affect soil fertility.

Recent compilations of data from around the world show

A dark coloured soil is usually rich in organic matter.

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

Vertisolic soils have several very distinct horizons.

Irrigation of arid lands can destroy the soil.

Cryosolic soils are most common in the middle latitudes.

Choose and describe one of the following soil forming process: laterization salinization calcification podzolization gleificiation.Where does it occur? What are the processes involved?

Weathered bedrock or weathered parent material (regolith),excluding the unweathered bedrock itself,is designated the ________ horizon.

Cryosolic soils are most likely to be found in

The principal natural soil-forming factors

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