Question 1

Which of the following pH values represents the most acid condition?

Accepted Answer

A) 1.0 
B) 10.0 
C) 7.0 
D) 100 
E) 5.55 
A) 1.0 
B) 10.0 
C) 7.0 
D) 100 
E) 5.55

Question 2

Except for some kinds of foods,modern industry has made human dependence on soils a thing of the past.

Accepted Answer

A) True 
 B)False

Question 3

Increasing the organic matter content of a soil is likely to _____.

Accepted Answer

A) have no effect on water holding capacity 
B) increase the soil's water holding capacity 
C) decrease the soil's water holding capacity 
A) have no effect on water holding capacity 
B) increase the soil's water holding capacity 
C) decrease the soil's water holding capacity

Question 4

A soil profile consists of _________.

Accepted Answer

A) the sum of chemical and physical data known about a soil 
B) the way a soil "feels" 
C) the spatial boundaries of a particular soil 
D) the set of layers seen in a vertical cross section of a soil 
E) the general outline of a soil or group of soils when viewed from the side 
A) the sum of chemical and physical data known about a soil 
B) the way a soil "feels" 
C) the spatial boundaries of a particular soil 
D) the set of layers seen in a vertical cross section of a soil 
E) the general outline of a soil or group of soils when viewed from the side

Question 5

The lithosphere is made up of _________.

Accepted Answer

A) air 
B) rock 
C) water 
D) plants and animals 
E) all of the above 
A) air 
B) rock 
C) water 
D) plants and animals 
E) all of the above

Question 6

In a load of 10 cubic meters of topsoil,approximately how many cubic meters of the volume would be solid material?

Accepted Answer

A) 1 
B) 2.5 
C) 4 
D) 5 
E) 7.5 
A) 1 
B) 2.5 
C) 4 
D) 5 
E) 7.5

Question 7

Subsoil is typically equivalent to the O horizon.

Accepted Answer

A) True 
 B)False

Question 8

Most of the different nutrients essential for growth are supplied to plants directly from the ______.

Accepted Answer

A) rain water 
B) soil solution 
C) atmosphere 
D) cosmic radiation 
E) humus 
A) rain water 
B) soil solution 
C) atmosphere 
D) cosmic radiation 
E) humus

Question 9

Plants can be grown without any soil.

Accepted Answer

A) True 
 B)False

Question 10

Most of the water in our rivers and lakes has come in contact with and has been affected by soils.

Accepted Answer

A) True 
 B)False

Question 11

A,B,C,and E horizons can be found in any true soil.

Accepted Answer

A) True 
 B)False

Question 12

The water in the soil typically differs from pure water because the soil water ________.

Accepted Answer

A) contains organic compounds 
B) contains mineral nutrients 
C) is restrained in its flow by attraction to particle surfaces 
D) all of the above 
E) none of the above 
A) contains organic compounds 
B) contains mineral nutrients 
C) is restrained in its flow by attraction to particle surfaces 
D) all of the above 
E) none of the above

Question 13

Although subsoil is more difficult to obtain,it is generally equally as good as topsoil for landscaping purposes.

Accepted Answer

A) True 
 B)False

Question 14

In a given soil,the horizon with the highest organic matter content is generally the _____ horizon.

Accepted Answer

A) E 
B) C 
C) D 
D) B 
E) A 
A) E 
B) C 
C) D 
D) B 
E) A

Question 15

Soil occupies the ______part of the regolith.

Accepted Answer

A) upper 
B) lower 
C) younger 
D) both B and C 
A) upper 
B) lower 
C) younger 
D) both B and C

Question 16

Compared to silt,clay-sized soil particles are characterized by ______.

Accepted Answer

A) greater attraction for water 
B) greater proportion of primary minerals 
C) less tendency to form hard clods when dry 
D) less capacity to hold nutrients in plant-available forms 
A) greater attraction for water 
B) greater proportion of primary minerals 
C) less tendency to form hard clods when dry 
D) less capacity to hold nutrients in plant-available forms

Question 17

"Subsoil" is generally equivalent to which soil horizon?

Accepted Answer

A) A 
B) B 
C) C 
D) D 
E) E 
A) A 
B) B 
C) C 
D) D 
E) E

Question 18

If supplied with a suitable nutrient solution,plants can grow normally without any soil at all.

Accepted Answer

A) True 
 B)False

Question 19

In a typical mineral soil in optimal condition for plant growth,approximately what percentage of the pore space would be filled with water and what percentage filled with air?

Accepted Answer

A) 10% water and 90% air 
B) 90% water and 10% air 
C) 25% water and 25% air 
D) 50% water and 50% air 
E) 25% water and 75% air 
A) 10% water and 90% air 
B) 90% water and 10% air 
C) 25% water and 25% air 
D) 50% water and 50% air 
E) 25% water and 75% air

Question 20

Soil air usually has a higher carbon dioxide content than the air in the atmosphere.

Accepted Answer

A) True 
 B)False

Which of the following pH values represents the most acid condition?

Except for some kinds of foods,modern industry has made human dependence on soils a thing of the past.

Increasing the organic matter content of a soil is likely to _____.

A soil profile consists of _________.

The lithosphere is made up of _________.

In a load of 10 cubic meters of topsoil,approximately how many cubic meters of the volume would be solid material?

Subsoil is typically equivalent to the O horizon.

Most of the different nutrients essential for growth are supplied to plants directly from the ______.

Plants can be grown without any soil.

Most of the water in our rivers and lakes has come in contact with and has been affected by soils.

A,B,C,and E horizons can be found in any true soil.

The water in the soil typically differs from pure water because the soil water ________.

Although subsoil is more difficult to obtain,it is generally equally as good as topsoil for landscaping purposes.

In a given soil,the horizon with the highest organic matter content is generally the _____ horizon.

Soil occupies the ______part of the regolith.

Compared to silt,clay-sized soil particles are characterized by ______.

"Subsoil" is generally equivalent to which soil horizon?

If supplied with a suitable nutrient solution,plants can grow normally without any soil at all.

In a typical mineral soil in optimal condition for plant growth,approximately what percentage of the pore space would be filled with water and what percentage filled with air?

Soil air usually has a higher carbon dioxide content than the air in the atmosphere.

Formation of Soils From Parent Materials

Soil Classification

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

Exam 1: The Soils Around Us

Which of the following pH values represents the most acid condition?

Except for some kinds of foods,modern industry has made human dependence on soils a thing of the past.

Increasing the organic matter content of a soil is likely to _____.

A soil profile consists of _________.

The lithosphere is made up of _________.

In a load of 10 cubic meters of topsoil,approximately how many cubic meters of the volume would be solid material?

Subsoil is typically equivalent to the O horizon.

Most of the different nutrients essential for growth are supplied to plants directly from the ______.

Plants can be grown without any soil.

Most of the water in our rivers and lakes has come in contact with and has been affected by soils.

A,B,C,and E horizons can be found in any true soil.

The water in the soil typically differs from pure water because the soil water ________.

Although subsoil is more difficult to obtain,it is generally equally as good as topsoil for landscaping purposes.

In a given soil,the horizon with the highest organic matter content is generally the _____ horizon.

Soil occupies the ______part of the regolith.

Compared to silt,clay-sized soil particles are characterized by ______.

"Subsoil" is generally equivalent to which soil horizon?

If supplied with a suitable nutrient solution,plants can grow normally without any soil at all.

In a typical mineral soil in optimal condition for plant growth,approximately what percentage of the pore space would be filled with water and what percentage filled with air?

Soil air usually has a higher carbon dioxide content than the air in the atmosphere.

Formation of Soils From Parent Materials

Soil Classification

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