Question 1

Oxisols are more highly weathered than are the soils of any other order.

Accepted Answer

A) True 
 B)False  True

Question 2

The nomenclature of Soil Taxonomy is characterized by all but which one of the following statements?

Accepted Answer

A) Soil names (except for series level)identifies major soil characteristics. 
B) The names of the orders all end with the letters sols. 
C) The subgroup name also tells you the great group,suborder,and order names. 
D) The names give a clear indication of the modes of genesis of the soil. 
E) The names are based on measurable properties and not on presumed modes of genesis. 
A) Soil names (except for series level)identifies major soil characteristics. 
B) The names of the orders all end with the letters sols. 
C) The subgroup name also tells you the great group,suborder,and order names. 
D) The names give a clear indication of the modes of genesis of the soil. 
E) The names are based on measurable properties and not on presumed modes of genesis. D

Question 3

Soil scientists from which country first conceived the idea that soils were natural bodies?

Accepted Answer

A) United States 
B) France 
C) Russia 
D) Great Britain 
E) Belgium 
A) United States 
B) France 
C) Russia 
D) Great Britain 
E) Belgium C

Question 4

For agricultural use in a given region,a soil with an ochric epipedon could generally be expected to be more productive than one with a mollic epipedon.

Accepted Answer

A) True 
 B)False

Question 5

Vertisols are characterized by high contents of swelling-type silicate clays.

Accepted Answer

A) True 
 B)False

Question 6

In which of the following epipedons is the organic matter level generally lowest?

Accepted Answer

A) mollic 
B) umbric 
C) histic 
D) ochric 
E) melanic 
A) mollic 
B) umbric 
C) histic 
D) ochric 
E) melanic

Question 7

Soils in this order are commonly sandy in texture,quite acidic and develop primarily under coniferous trees in cool to cold climates

Accepted Answer

A) Mollisols 
B) Andisols 
C) Spodosols 
D) Alfisols 
E) Ultisols 
A) Mollisols 
B) Andisols 
C) Spodosols 
D) Alfisols 
E) Ultisols

Question 8

The soil and a soil are two extremes in the concept of soils that is basic to most classification schemes.

Accepted Answer

A) True 
 B)False

Question 9

Andisols are found mostly near recently active volcanoes.

Accepted Answer

A) True 
 B)False

Question 10

Soils in the Oxisols order are deeply weathered and have deep subsurface horizons of silicon oxide.

Accepted Answer

A) True 
 B)False

Question 11

Which soil moisture regime has the highest soil moisture levels?

Accepted Answer

A) udic 
B) ustic 
C) aquic 
D) aridic 
E) xeric 
A) udic 
B) ustic 
C) aquic 
D) aridic 
E) xeric

Question 12

Soils classified as Inceptisols have the least well developed profiles of those in any order in the Soil Taxonomy system.

Accepted Answer

A) True 
 B)False

Question 13

The family category focuses on properties affecting plant roots and suitability for engineering uses of soils.

Accepted Answer

A) True 
 B)False

Question 14

A polypedon or individual soil is a group of closely related pedons that conceptually approximates what in the United States is called a soil series.

Accepted Answer

A) True 
 B)False

Question 15

Argillic horizons are characterized by ___.

Accepted Answer

A) accumulation of silicate clays 
B) high level of Na+ ions 
C) high levels of iron and aluminum oxides 
D) impervious hardpan layers 
E) organic matter accumulation 
A) accumulation of silicate clays 
B) high level of Na+ ions 
C) high levels of iron and aluminum oxides 
D) impervious hardpan layers 
E) organic matter accumulation

Question 16

A pedon is a 3 dimensional field unit occupying about 1000 square meters (1 hectare)of land area.

Accepted Answer

A) True 
 B)False

Question 17

Which of the following categories of Soil Taxonomy provides the greatest specificity of soil properties?

Accepted Answer

A) series 
B) suborder 
C) order 
D) family 
E) great group 
A) series 
B) suborder 
C) order 
D) family 
E) great group

Question 18

A soil has a thick black A horizon,a distinct B horizon,has reasonably stable soil structure,and was formed under grassland natural vegetation.In which suborder is it most likely classed?

Accepted Answer

A) udolls 
B) ustalfs 
C) cambids 
D) aquents 
E) udults. 
A) udolls 
B) ustalfs 
C) cambids 
D) aquents 
E) udults.

Question 19

Histosols generally have higher organic matter contents than Mollisols.

Accepted Answer

A) True 
 B)False

Question 20

Which of the following describes a soil likely to contain a significant content of low activity clays?

Accepted Answer

A) an Alfisol in New York 
B) a Mollisols in Central Brazil 
C) an Oxisol in Minnesota 
D) an Ultisol in the Congo River basin in Africa 
E) an Inceptisol in Mississippi 
A) an Alfisol in New York 
B) a Mollisols in Central Brazil 
C) an Oxisol in Minnesota 
D) an Ultisol in the Congo River basin in Africa 
E) an Inceptisol in Mississippi

Oxisols are more highly weathered than are the soils of any other order.

The nomenclature of Soil Taxonomy is characterized by all but which one of the following statements?

Soil scientists from which country first conceived the idea that soils were natural bodies?

For agricultural use in a given region,a soil with an ochric epipedon could generally be expected to be more productive than one with a mollic epipedon.

Vertisols are characterized by high contents of swelling-type silicate clays.

In which of the following epipedons is the organic matter level generally lowest?

Soils in this order are commonly sandy in texture,quite acidic and develop primarily under coniferous trees in cool to cold climates

The soil and a soil are two extremes in the concept of soils that is basic to most classification schemes.

Andisols are found mostly near recently active volcanoes.

Soils in the Oxisols order are deeply weathered and have deep subsurface horizons of silicon oxide.

Which soil moisture regime has the highest soil moisture levels?

Soils classified as Inceptisols have the least well developed profiles of those in any order in the Soil Taxonomy system.

The family category focuses on properties affecting plant roots and suitability for engineering uses of soils.

A polypedon or individual soil is a group of closely related pedons that conceptually approximates what in the United States is called a soil series.

Argillic horizons are characterized by ___.

A pedon is a 3 dimensional field unit occupying about 1000 square meters (1 hectare)of land area.

Which of the following categories of Soil Taxonomy provides the greatest specificity of soil properties?

A soil has a thick black A horizon,a distinct B horizon,has reasonably stable soil structure,and was formed under grassland natural vegetation.In which suborder is it most likely classed?

Histosols generally have higher organic matter contents than Mollisols.

Which of the following describes a soil likely to contain a significant content of low activity clays?

The Soils Around Us

Formation of Soils From Parent Materials

Soil Architecture and Physical Properties

Soil Water: Characteristics and Behavior

Soil and the Hydrologic Cycle

Soil Aeration and Temperature

The Colloidal Fraction: Seat of Soil Chemical and Physical Activity

Soil Acidity

Soils of Dry Regionsalkalinity,salinity and Sodicity

Organisms and Ecology of the Soil

Soil Organic Matter

Nitrogen and Sulfur Economy of Soils

Soil Phosphorus and Potassium

Calcium,magnesium and Trace Elements

Practical Nutrient Management

Soil Erosion and Its Control

Soils and Chemical Pollution

Geographic Information About Soils

Prospects for Global Soil Quality As Affected by Human Activities

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Exam 3: Soil Classification

Oxisols are more highly weathered than are the soils of any other order.

The nomenclature of Soil Taxonomy is characterized by all but which one of the following statements?

Soil scientists from which country first conceived the idea that soils were natural bodies?

For agricultural use in a given region,a soil with an ochric epipedon could generally be expected to be more productive than one with a mollic epipedon.

Vertisols are characterized by high contents of swelling-type silicate clays.

In which of the following epipedons is the organic matter level generally lowest?

Soils in this order are commonly sandy in texture,quite acidic and develop primarily under coniferous trees in cool to cold climates

The soil and a soil are two extremes in the concept of soils that is basic to most classification schemes.

Andisols are found mostly near recently active volcanoes.

Soils in the Oxisols order are deeply weathered and have deep subsurface horizons of silicon oxide.

Which soil moisture regime has the highest soil moisture levels?

Soils classified as Inceptisols have the least well developed profiles of those in any order in the Soil Taxonomy system.

The family category focuses on properties affecting plant roots and suitability for engineering uses of soils.

A polypedon or individual soil is a group of closely related pedons that conceptually approximates what in the United States is called a soil series.

Argillic horizons are characterized by ___.

A pedon is a 3 dimensional field unit occupying about 1000 square meters (1 hectare)of land area.

Which of the following categories of Soil Taxonomy provides the greatest specificity of soil properties?

A soil has a thick black A horizon,a distinct B horizon,has reasonably stable soil structure,and was formed under grassland natural vegetation.In which suborder is it most likely classed?

Histosols generally have higher organic matter contents than Mollisols.

Which of the following describes a soil likely to contain a significant content of low activity clays?

The Soils Around Us

Formation of Soils From Parent Materials

Soil Architecture and Physical Properties

Soil Water: Characteristics and Behavior

Soil and the Hydrologic Cycle

Soil Aeration and Temperature

The Colloidal Fraction: Seat of Soil Chemical and Physical Activity

Soil Acidity

Soils of Dry Regionsalkalinity,salinity and Sodicity

Organisms and Ecology of the Soil

Soil Organic Matter

Nitrogen and Sulfur Economy of Soils

Soil Phosphorus and Potassium

Calcium,magnesium and Trace Elements

Practical Nutrient Management

Soil Erosion and Its Control

Soils and Chemical Pollution

Geographic Information About Soils

Prospects for Global Soil Quality As Affected by Human Activities

Filters