Question 1

Soil horizons, like alluvial sediments, generally have a horizontal orientation, regardless of the slope of the land.

Accepted Answer

A) True 
 B)False

Question 2

While many organisms depend on the soil for nutrients and water, only a few very specialized organisms live in the soil itself.

Accepted Answer

A) True 
 B)False

Question 3

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 4

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

Accepted Answer

A) True 
 B)False

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

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 7

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

Accepted Answer

A) True 
 B)False

Question 8

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 9

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

Accepted Answer

A) True 
 B)False

Question 10

Information about conditions at 2 to 4 meters deep in a soil is usually most helpful for understanding___.

Accepted Answer

A) how best to design a building foundation 
B) the diversity of animal life in the soil. 
C) the proper classification of the soil. 
D) fertility requirements of most crops 
A) how best to design a building foundation 
B) the diversity of animal life in the soil. 
C) the proper classification of the soil. 
D) fertility requirements of most crops

Question 11

The dark brown and black humus found in many soils does not mix well with clay minerals so there is very little contact between these two soil components.

Accepted Answer

A) True 
 B)False

Question 12

Most of the water flowing in rivers passed through a soil profile or over soil surfaces before reaching the river.

Accepted Answer

A) True 
 B)False

Question 13

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 14

The amount of different sizes of mineral particles in a soil defines the soil ________.

Accepted Answer

A) structure 
B) texture 
C) pore space 
D) solution 
E) profile 
A) structure 
B) texture 
C) pore space 
D) solution 
E) profile

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

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 17

Most (usually 80% or more) of soil potassium and calcium can be found in the form of _________________.

Accepted Answer

A) dissolved substances 
B) structural components of minerals 
C) exchangeable ions 
D) organic compounds 
A) dissolved substances 
B) structural components of minerals 
C) exchangeable ions 
D) organic compounds

Question 18

Practices that tend to increase the amount of organic matter in soils would be expected to reduce the global greenhouse effect.

Accepted Answer

A) True 
 B)False

Question 19

Plants can be grown without any soil.

Accepted Answer

A) True 
 B)False

Question 20

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

Soil horizons, like alluvial sediments, generally have a horizontal orientation, regardless of the slope of the land.

While many organisms depend on the soil for nutrients and water, only a few very specialized organisms live in the soil itself.

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

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

The lithosphere is made up of _________.

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

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

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

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

Information about conditions at 2 to 4 meters deep in a soil is usually most helpful for understanding___.

The dark brown and black humus found in many soils does not mix well with clay minerals so there is very little contact between these two soil components.

Most of the water flowing in rivers passed through a soil profile or over soil surfaces before reaching the river.

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

The amount of different sizes of mineral particles in a soil defines the soil ________.

Soil occupies the ______part of the regolith.

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

Most (usually 80% or more) of soil potassium and calcium can be found in the form of _________________.

Practices that tend to increase the amount of organic matter in soils would be expected to reduce the global greenhouse effect.

Plants can be grown without any soil.

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

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

Soil Colloids: Seat of Soil Chemical and Physical Activity

Soil Acidity

Soils of Dry Regions: Alkalinity, Salinity, and Sodicity

Organisms and Ecology of the Soil

Soil Organic Matter

Nitrogen and Sulfur Economy of Soils

Soil Phosphorus and Potassium

Micronutrients and Other Trace Elements

Practical Nutrient Management

Soil Erosion and Its Control

Soils and Chemical Pollution

Geographic Soils Information

Prospects for Global Soil Quality

Filters

Exam 1: The Soils Around US

Soil horizons, like alluvial sediments, generally have a horizontal orientation, regardless of the slope of the land.

While many organisms depend on the soil for nutrients and water, only a few very specialized organisms live in the soil itself.

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

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

The lithosphere is made up of _________.

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

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

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

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

Information about conditions at 2 to 4 meters deep in a soil is usually most helpful for understanding___.

The dark brown and black humus found in many soils does not mix well with clay minerals so there is very little contact between these two soil components.

Most of the water flowing in rivers passed through a soil profile or over soil surfaces before reaching the river.

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

The amount of different sizes of mineral particles in a soil defines the soil ________.

Soil occupies the ______part of the regolith.

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

Most (usually 80% or more) of soil potassium and calcium can be found in the form of _________________.

Practices that tend to increase the amount of organic matter in soils would be expected to reduce the global greenhouse effect.

Plants can be grown without any soil.

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

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

Soil Colloids: Seat of Soil Chemical and Physical Activity

Soil Acidity

Soils of Dry Regions: Alkalinity, Salinity, and Sodicity

Organisms and Ecology of the Soil

Soil Organic Matter

Nitrogen and Sulfur Economy of Soils

Soil Phosphorus and Potassium

Micronutrients and Other Trace Elements

Practical Nutrient Management

Soil Erosion and Its Control

Soils and Chemical Pollution

Geographic Soils Information

Prospects for Global Soil Quality

Filters