Question 1

This type of water is held to soil particles by adhesion and is normally unavailable to plants.

Accepted Answer

A)   combined water
B)   hygroscopic water
C)   gravitational water
D)   capillary water
E)   all of the aboveF) B) and D)
G) None of the above

Question 2

A soil with a large percentage of clay would be ________ and ________.

Accepted Answer

A)   porous, permeable
B)   non-porous, non-permeable
C)   porous, non-permeable
D)   non-porous, permeable
E)   none of the aboveF) C) and D)
G) All of the above

Question 3

On soils of the ________ soil order, the litter decomposes slowly and the upper part of the soil is so leached that it is light in color.

Accepted Answer

Spodosol

Question 4

Hardpan is a calcium carbonate concentration in the B horizon.

Accepted Answer

A) True 
 B)False

Question 5

Mollisols are relatively rare soils in the United States.

Accepted Answer

A) True 
 B)False

Question 6

Gravitational water is ________.

Accepted Answer

A)   a temporary form of soil moisture
B)   the same thing as capillary water
C)   present when the wilting point is reached
D)   the same thing as hygroscopic water
E)   the most important source of water for plantsF) A) and E)
G) A) and C)

Question 7

An acid is a chemical compound that produces hydronium ions or ________ ions when dissolved in water.

Accepted Answer

The answer of An acid is a chemical compound that...

Question 8

Because of its comprehensiveness, the Soil Taxonomy presents great difficulty for small scale maps.

Accepted Answer

A) True 
 B)False

Question 9

A major determinant of a soil's water holding capacity is its ________.

Accepted Answer

A)   colloids
B)   pH value
C)   soil profile
D)   structure
E)   microorganismsF) C) and D)
G) B) and D)

Question 10

Which of the following is a reason earthworms increase the fertility of the soils in which they reside?

Accepted Answer

A)   formation of aggregate soil particles
B)   mixing of leaf litter
C)   increased nitrification
D)   increase of soil nutrients
E)   all of the aboveF) B) and E)
G) A) and B)

Question 11

The difference between field capacity and the wilting point is called ________.

Accepted Answer

A)   soil moisture
B)   available soil moisture
C)   groundwater
D)   runoff
E)   capillary waterF) A) and B)
G) A) and E)

Question 12

Histosols are a soil order most common in world deserts.

Accepted Answer

A) True 
 B)False

Question 13

The processes of eluviation and leaching are closely connected.

Accepted Answer

A) True 
 B)False

Question 14

Which soil type is associated with an alternating wet and dry climate?

Accepted Answer

A)   Aridisols
B)   Andisols
C)   Entisols
D)   Vertisols
E)   InceptisolsF) A) and E)
G) A) and C)

Question 15

In the United States, the ________ states are most closely associated with gleization.

Accepted Answer

A)   West Coast
B)   Gulf Coast
C)   East Coast
D)   Rocky Mountain
E)   Great LakesF) A) and B)
G) A) and C)

Question 16

Like ________, humus is a catalyst for chemical reactions and a reservoir for plant nutrients and soil water.

Accepted Answer

A)   clay
B)   mud
C)   silt
D)   cations
E)   ironF) A) and D)
G) B) and E) A

Question 17

In semiarid climates, grass roots transport much ________ from the B horizon to the A horizon.

Accepted Answer

A)   gravel
B)   clay
C)   phosphorus
D)   calcium
E)   uraniumF) B) and E)
G) C) and D)

Question 18

Which pedogenic regime is most closely associated with the drier prairies of North America?

Accepted Answer

A)   gleization
B)   salinization
C)   laterization
D)   calcification
E)   podzolizationF) A) and D)
G) C) and D)

Question 19

________ are organisms that create organically rich casts.

Accepted Answer

The answer of ________ are organisms that create organically rich...

Question 20

The cation exchange capacity is most closely associated with ________.

Accepted Answer

A)   sand
B)   silt
C)   color
D)   regolith
E)   colloidsF) B) and D)
G) A) and B) E

Exam 12: Soils

This type of water is held to soil particles by adhesion and is normally unavailable to plants.

Correct AnswerverifiedShow Answer

A soil with a large percentage of clay would be ________ and ________.

Correct AnswerverifiedShow Answer

On soils of the ________ soil order, the litter decomposes slowly and the upper part of the soil is so leached that it is light in color.

Correct AnswerverifiedSpodosol

Hardpan is a calcium carbonate concentration in the B horizon.

Correct AnswerverifiedShow Answer

Mollisols are relatively rare soils in the United States.

Correct AnswerverifiedShow Answer

Gravitational water is ________.

Correct AnswerverifiedShow Answer

An acid is a chemical compound that produces hydronium ions or ________ ions when dissolved in water.

Correct AnswerverifiedShow Answer

Because of its comprehensiveness, the Soil Taxonomy presents great difficulty for small scale maps.

Correct AnswerverifiedShow Answer

A major determinant of a soil's water holding capacity is its ________.

Correct AnswerverifiedShow Answer

Which of the following is a reason earthworms increase the fertility of the soils in which they reside?

Correct AnswerverifiedShow Answer

The difference between field capacity and the wilting point is called ________.

Correct AnswerverifiedShow Answer

Histosols are a soil order most common in world deserts.

Correct AnswerverifiedShow Answer

The processes of eluviation and leaching are closely connected.

Correct AnswerverifiedShow Answer

Which soil type is associated with an alternating wet and dry climate?

Correct AnswerverifiedShow Answer

In the United States, the ________ states are most closely associated with gleization.

Correct AnswerverifiedShow Answer

Like ________, humus is a catalyst for chemical reactions and a reservoir for plant nutrients and soil water.

Correct AnswerverifiedA

In semiarid climates, grass roots transport much ________ from the B horizon to the A horizon.

Correct AnswerverifiedShow Answer

Which pedogenic regime is most closely associated with the drier prairies of North America?

Correct AnswerverifiedShow Answer

________ are organisms that create organically rich casts.

Correct AnswerverifiedShow Answer

The cation exchange capacity is most closely associated with ________.

Correct AnswerverifiedE

Correct Answer
verified

A soil with a large percentage of clay would be and .

Correct Answer
verified

Correct Answer
verified
Spodosol

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified
A

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified
E