Question 1

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  True

Question 2

Natural soils (as opposed to modern farm soils)can recycle organic compounds,but not inorganic elements.

Accepted Answer

A) True 
 B)False  False

Question 3

Which of the following is (are)essential plant nutrients?

Accepted Answer

A) Cu 
B) Al 
C) Sr 
D) Pb 
E) all of the above 
A) Cu 
B) Al 
C) Sr 
D) Pb 
E) all of the above A

Question 4

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 5

The mineral particles in soil consist of sand,silt,and clay.

Accepted Answer

A) True 
 B)False

Question 6

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 7

Most,if not all,of the nutrient supply stored in a fertile soil is in forms readily available to plants.

Accepted Answer

A) True 
 B)False

Question 8

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 9

The layers of contrasting material found when one digs a hole in the ground are called _______.

Accepted Answer

A) pseudoliths 
B) regoliths 
C) pedons 
D) horizons 
E) soil structure 
A) pseudoliths 
B) regoliths 
C) pedons 
D) horizons 
E) soil structure

Question 10

In humid regions most rainwater that soaks into the soil and is not used by plants eventually flows into rivers and streams.

Accepted Answer

A) True 
 B)False

Question 11

Which of the following pH values represents a neutral condition?

Accepted Answer

A) 1.0 
B) 5.0 
C) 6.0 
D) 7.0 
E) 10 
A) 1.0 
B) 5.0 
C) 6.0 
D) 7.0 
E) 10

Question 12

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

Accepted Answer

A) True 
 B)False

Question 13

Which of the following is considered to be a plant macronutrient?

Accepted Answer

A) N 
B) P 
C) S 
D) Ca 
E) all of the above 
A) N 
B) P 
C) S 
D) Ca 
E) all of the above

Question 14

For any soil in which it is present,the C horizon is the parent material for the B horizon.

Accepted Answer

A) True 
 B)False

Question 15

Hydroxyl ion concentrations are greatest in a soil solution with a pH value of ______.

Accepted Answer

A) 0.1 
B) 4.0 
C) 5.0 
D) 6.5 
A) 0.1 
B) 4.0 
C) 5.0 
D) 6.5

Question 16

Soil,like concrete and steel,is a standard construction material.Its properties are well characterized and predictable so that standard building foundation designs can be used uniformly at all building sites of a given topography.

Accepted Answer

A) True 
 B)False

Question 17

Where organic matter constitutes only 1 or 2 percent of the soil by weight,it has only negligible influence on soil properties.

Accepted Answer

A) True 
 B)False

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

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 20

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

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

Natural soils (as opposed to modern farm soils)can recycle organic compounds,but not inorganic elements.

Which of the following is (are)essential plant nutrients?

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

The mineral particles in soil consist of sand,silt,and clay.

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,if not all,of the nutrient supply stored in a fertile soil is in forms readily available to plants.

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

The layers of contrasting material found when one digs a hole in the ground are called _______.

In humid regions most rainwater that soaks into the soil and is not used by plants eventually flows into rivers and streams.

Which of the following pH values represents a neutral condition?

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

Which of the following is considered to be a plant macronutrient?

For any soil in which it is present,the C horizon is the parent material for the B horizon.

Hydroxyl ion concentrations are greatest in a soil solution with a pH value of ______.

Soil,like concrete and steel,is a standard construction material.Its properties are well characterized and predictable so that standard building foundation designs can be used uniformly at all building sites of a given topography.

Where organic matter constitutes only 1 or 2 percent of the soil by weight,it has only negligible influence on soil properties.

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

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

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

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

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

Natural soils (as opposed to modern farm soils)can recycle organic compounds,but not inorganic elements.

Which of the following is (are)essential plant nutrients?

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

The mineral particles in soil consist of sand,silt,and clay.

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,if not all,of the nutrient supply stored in a fertile soil is in forms readily available to plants.

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

The layers of contrasting material found when one digs a hole in the ground are called _______.

In humid regions most rainwater that soaks into the soil and is not used by plants eventually flows into rivers and streams.

Which of the following pH values represents a neutral condition?

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

Which of the following is considered to be a plant macronutrient?

For any soil in which it is present,the C horizon is the parent material for the B horizon.

Hydroxyl ion concentrations are greatest in a soil solution with a pH value of ______.

Soil,like concrete and steel,is a standard construction material.Its properties are well characterized and predictable so that standard building foundation designs can be used uniformly at all building sites of a given topography.

Where organic matter constitutes only 1 or 2 percent of the soil by weight,it has only negligible influence on soil properties.

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

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

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

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