Question 1

Which soil order occupies the most land area worldwide?

Accepted Answer

A)   Oxisols
B)   Mollisols
C)   Aridisols
D)   Andisols

Question 2

In terms of pedogenic regimes, the leaching process in humid and warm climates is known as

Accepted Answer

A)   laterization
B)   salinization.
C)   calcification.
D)   podzolization.
E)   gleization.

Question 3

Desertification is affecting over a billion people worldwide.

Accepted Answer

A) True 
 B)False

Question 4

In a west to east transect across the 98th meridian in the United States, which of the following is the correct sequence of soil orders?

Accepted Answer

A)   Alfisols, Aridisols, Ultisols
B)   Aridisols, Oxisols, Mollisols
C)   Aridisols, Mollisols, Alfisols
D)   Alfisols, Mollisols, Utilsols

Question 5

Salinization is likely to occur

Accepted Answer

A)   in the tropics.
B)   in areas of high potential evapotranspiration rates.
C)   in humid climate regions.
D)   in areas characterized by coniferous forests.

Question 6

Which of the following areas has the highest rick of desertification?

Accepted Answer

A)   the Sahel (Sub-Saharan Africa) 
B)   northeastern Australia
C)   central Asia
D)   Venezuela

Question 7

Which of the following is not a factor contributing to desertification?

Accepted Answer

A)   overgrazing
B)   no-till agriculture
C)   salinization
D)   climate change

Question 8

A few centimeters' thickness of prime farmland soil may require ________ years to form.

Accepted Answer

A)   10
B)   50
C)   100
D)   500

Question 9

________ are high latitude soils containing permafrost and large amounts of organic matter.

Accepted Answer

A)   Alfisols
B)   Ultisols
C)   Inceptisols
D)   Gelisols

Question 10

Soils will develop at faster rates in which of the following environments?

Accepted Answer

A)   hot and dry
B)   cold and dry
C)   warm and humid
D)   in areas where they can develop directly from bedrock, regardless of climate conditions

Question 11

Which of the following is among the most mature soils on Earth?

Accepted Answer

A)   Andisols
B)   Inceptisols
C)   Entisols
D)   Oxisols

Question 12

List and briefly describe the various physical properties used to differentiate soils.

Accepted Answer

Soil color is an important indicator of ...

Question 13

Which of the following best describes the role of biological activity in soils development?

Accepted Answer

A)   Broadleaf trees tend to increase the alkalinity of soil, whereas needleleaf trees increase the acidity.
B)   Earthworms increase soil porosity and contribute to soil movement and organic content.
C)   Plant roots provide channels for air and water movement in soils.
D)   All organisms living in, on, and over the soil, influence soil development and characteristics: they can influence the pH, the organic matter, chemical content, and biological content of soils.

Question 14

Acidic soils

Accepted Answer

A)   are exceptionally rare.
B)   cause more rapid weathering and leaching of nutrients.
C)   tend to be very fertile and excellent for agriculture purposes.
D)   are high in calcium, magnesium, potassium, and sodium ions.

Question 15

Soil separates refers to

Accepted Answer

A)   differing soil colors in a pedon.
B)   individual mineral particles, such as sand, silt, and clay.
C)   the different soil horizons.
D)   pebbles, gravel, cobble, and other materials greater than 2 mm in diameter found in soils.

Question 16

________ refers to the size and shape of the aggregates of particles of soil.

Accepted Answer

A)   Soil texture
B)   Soil consistence
C)   Soil structure
D)   Soil plasticity

Question 17

Most of the glacially derived till and outwash materials from New York through the Appalachians are

Accepted Answer

A)   Spodosols.
B)   Histosols.
C)   Inceptisols.
D)   Gelisols.

Question 18

What are some of the concerns regarding the rate and amount of soil loss in the United States. What does a cost benefit analysis of soil loss prevention show?

Accepted Answer

Soil erosion is the breakdown, detachmen...

Question 19

Mollisols are widespread in the United States. occurring throughout the Great Plains region.

Accepted Answer

A) True 
 B)False

Question 20

What do you think are the biggest challenges related to soil conservation and management in the coming decades?

Accepted Answer

Answers will vary. However, they may inc...

Exam 18: The Geography of Soils

Salinization is likely to occur

Correct AnswerverifiedShow Answer

________ refers to the size and shape of the aggregates of particles of soil.

Correct AnswerverifiedShow Answer

Most of the glacially derived till and outwash materials from New York through the Appalachians are

Correct AnswerverifiedShow Answer

Which of the following is among the most mature soils on Earth?

Correct AnswerverifiedShow Answer

Soils will develop at faster rates in which of the following environments?

Correct AnswerverifiedShow Answer

In terms of pedogenic regimes, the leaching process in humid and warm climates is known as

Correct AnswerverifiedShow Answer

What do you think are the biggest challenges related to soil conservation and management in the coming decades?

Correct AnswerverifiedAnswers will vary. However, they may inc...View AnswerShow Answer

A few centimeters' thickness of prime farmland soil may require ________ years to form.

Correct AnswerverifiedShow Answer

________ are high latitude soils containing permafrost and large amounts of organic matter.

Correct AnswerverifiedShow Answer

List and briefly describe the various physical properties used to differentiate soils.

Correct AnswerverifiedSoil color is an important indicator of ...View AnswerShow Answer

In a west to east transect across the 98th meridian in the United States, which of the following is the correct sequence of soil orders?

Correct AnswerverifiedShow Answer

What are some of the concerns regarding the rate and amount of soil loss in the United States. What does a cost benefit analysis of soil loss prevention show?

Correct AnswerverifiedSoil erosion is the breakdown, detachmen...View AnswerShow Answer

Desertification is affecting over a billion people worldwide.

Correct AnswerverifiedShow Answer

Acidic soils

Correct AnswerverifiedShow Answer

Which of the following is not a factor contributing to desertification?

Correct AnswerverifiedShow Answer

Which soil order occupies the most land area worldwide?

Correct AnswerverifiedShow Answer

Mollisols are widespread in the United States. occurring throughout the Great Plains region.

Correct AnswerverifiedShow Answer

Which of the following best describes the role of biological activity in soils development?

Correct AnswerverifiedShow Answer

Soil separates refers to

Correct AnswerverifiedShow Answer

Which of the following areas has the highest rick of desertification?

Correct AnswerverifiedShow Answer

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Answers will vary. However, they may inc...
View Answer

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Soil color is an important indicator of ...
View Answer

Correct Answer
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Correct Answer
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Soil erosion is the breakdown, detachmen...
View Answer

Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
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