Question 1

A loam soil consists of:

Accepted Answer

A)   mostly silt and sand
B)   mostly silt and clay
C)   mostly clay and sand
D)   nearly equal amounts of clay, silt, and sandE) A) and B)
F) B) and D) D

Question 2

Soils that often swell during wet seasons and crack during dry periods are most likely ____ soils.

Accepted Answer

A)   loam
B)   sandy
C)   clay
D)   siltE) None of the above
F) B) and D)

Question 3

Alkaline soils have a pH value of:

Accepted Answer

A)   from 0 to 4
B)   from 4 to 7
C)   near 7
D)   from 7 to 11
E)   15 to 20F) A) and E)
G) C) and D)

Question 4

A pedon extends down to _______.

Accepted Answer

A)   just above the C horizon
B)   the top of the R horizon
C)   the top of the B horizon
D)   the E horizonE) A) and D)
F) A) and B)

Question 5

The smallest soil particle is called:

Accepted Answer

A)   silt
B)   gravel
C)   sand
D)   clayE) All of the above
F) B) and C)

Question 6

Cations are positively charged ions.

Accepted Answer

A) True 
 B)False

Question 7

Solum consists of the following soil layers.

Accepted Answer

A)   O, A
B)   O, A, B, C
C)   A, B
D)   C, R
E)   15F) None of the above
G) A) and E)

Question 8

When the upper layers of soil are dark brown or black, this would indicate:

Accepted Answer

A)   a high pH level
B)   the presence of organic matter
C)   a high level of solar radiation
D)   the presence of iron oxidesE) A) and C)
F) A) and D)

Question 9

70% sand, 20% silt, and 10% clay would be considered a _____ soil.

Accepted Answer

A)   sandy loam
B)   sandy silt
C)   sandy clay
D)   loamE) C) and D)
F) A) and D)

Question 10

How does colluvium differ from alluvium?

Accepted Answer

A)   Colluvium is transported soil, while alluvium is residual soil.
B)   Colluvium is transported by overland flow, while alluvium is transported by rivers.
C)   Colluvium is residual soil, while alluvium is transported soil.
D)   They are both formed by the same process.E) A) and B)
F) All of the above B

Question 11

Porosity is the ability of soil to ___ water.

Accepted Answer

A)   hold
B)   dissolve
C)   transmit
D)   discharge
E)   produceF) A) and E)
G) C) and D)

Question 12

The peds associated with platy soil structure most closely resemble:

Accepted Answer

A)   bread crumbs
B)   flakes
C)   columns
D)   small ropes
E)   ice cubesF) A) and E)
G) A) and D)

Question 13

The _______ is the rate at which water can flow through soil.

Accepted Answer

A)   porosity
B)   permeability
C)   field capacity
D)   fluvialityE) C) and D)
F) All of the above

Question 14

A soil with pH of ____ is neither acidic nor alkaline.

Accepted Answer

A)   5
B)   7
C)   9
D)   11
E)   15F) C) and D)
G) A) and B)

Question 15

Peds that are arranged into vertical columns, especially in the B horizon, show ___ structure.

Accepted Answer

A)   platy
B)   granular
C)   blocky
D)   prismaticE) A) and B)
F) A) and C)

Question 16

What type of topography produces a thicker soil depth?

Accepted Answer

A)   flat
B)   gently sloping
C)   steeply sloping
D)   mountainousE) None of the above
F) All of the above

Question 17

The acidity of a soil increases as the H+ ions become more abundant.

Accepted Answer

A) True 
 B)False  False

Question 18

Which soil would have the highest permeability?

Accepted Answer

A)   clay loam
B)   sandy loam
C)   silty loam
D)   silty clayE) All of the above
F) None of the above

Exam 22: Properties of Soil

A loam soil consists of:

Correct Answer
verified
D

Soils that often swell during wet seasons and crack during dry periods are most likely ____ soils.

Correct Answer
verified

Alkaline soils have a pH value of:

Correct Answer
verified

A pedon extends down to _______.

Correct Answer
verified

The smallest soil particle is called:

Correct Answer
verified

Cations are positively charged ions.

Correct Answer
verified

Solum consists of the following soil layers.

Correct Answer
verified

When the upper layers of soil are dark brown or black, this would indicate:

Correct Answer
verified

70% sand, 20% silt, and 10% clay would be considered a _____ soil.

Correct Answer
verified

How does colluvium differ from alluvium?

Correct Answer
verified
B

Porosity is the ability of soil to ___ water.

Correct Answer
verified

The peds associated with platy soil structure most closely resemble:

Correct Answer
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The _______ is the rate at which water can flow through soil.

Correct Answer
verified

A soil with pH of ____ is neither acidic nor alkaline.

Correct Answer
verified

Peds that are arranged into vertical columns, especially in the B horizon, show ___ structure.

Correct Answer
verified

What type of topography produces a thicker soil depth?

Correct Answer
verified

The acidity of a soil increases as the H+ ions become more abundant.

Correct Answer
verified
False

Which soil would have the highest permeability?

Correct Answer
verified

Exam 22: Properties of Soil

A loam soil consists of:

Correct AnswerverifiedD

Soils that often swell during wet seasons and crack during dry periods are most likely ____ soils.

Correct AnswerverifiedShow Answer

Alkaline soils have a pH value of:

Correct AnswerverifiedShow Answer

A pedon extends down to _______.

Correct AnswerverifiedShow Answer

The smallest soil particle is called:

Correct AnswerverifiedShow Answer

Cations are positively charged ions.

Correct AnswerverifiedShow Answer

Solum consists of the following soil layers.

Correct AnswerverifiedShow Answer

When the upper layers of soil are dark brown or black, this would indicate:

Correct AnswerverifiedShow Answer

70% sand, 20% silt, and 10% clay would be considered a _____ soil.

Correct AnswerverifiedShow Answer

How does colluvium differ from alluvium?

Correct AnswerverifiedB

Porosity is the ability of soil to ___ water.

Correct AnswerverifiedShow Answer

The peds associated with platy soil structure most closely resemble:

Correct AnswerverifiedShow Answer

The _______ is the rate at which water can flow through soil.

Correct AnswerverifiedShow Answer

A soil with pH of ____ is neither acidic nor alkaline.

Correct AnswerverifiedShow Answer

Peds that are arranged into vertical columns, especially in the B horizon, show ___ structure.

Correct AnswerverifiedShow Answer

What type of topography produces a thicker soil depth?

Correct AnswerverifiedShow Answer

The acidity of a soil increases as the H+ ions become more abundant.

Correct AnswerverifiedFalse

Which soil would have the highest permeability?

Correct AnswerverifiedShow Answer

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D

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B

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False

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