Question 1

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  False

Question 2

Hydroponics will likely be a key element in enabling the world to feed and clothe its increasing human population in the next few decades.

Accepted Answer

A) True 
 B)False  False

Question 3

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

Accepted Answer

A) True 
 B)False  True

Question 4

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 5

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 6

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 7

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

Question 8

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

Accepted Answer

A) True 
 B)False

Question 9

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 10

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 11

"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 12

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 13

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 14

In a load of 10 cubic meters of topsoil, approximately how 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 15

Subsoil is typically equivalent to the O horizon.

Accepted Answer

A) True 
 B)False

Question 16

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 17

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 18

"Topsoil" 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 19

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 20

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

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

Hydroponics will likely be a key element in enabling the world to feed and clothe its increasing human population in the next few decades.

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

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

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

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

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

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

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

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.

"Subsoil" is generally equivalent to which soil horizon?

Which of the following pH values represents a neutral condition?

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

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

Subsoil is typically equivalent to the O horizon.

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

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?

"Topsoil" is generally equivalent to which soil horizon?

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

A soil profile consists of _________.

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

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

Hydroponics will likely be a key element in enabling the world to feed and clothe its increasing human population in the next few decades.

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

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

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

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

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

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

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

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.

"Subsoil" is generally equivalent to which soil horizon?

Which of the following pH values represents a neutral condition?

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

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

Subsoil is typically equivalent to the O horizon.

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

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?

"Topsoil" is generally equivalent to which soil horizon?

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

A soil profile consists of _________.

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