Question 1

Irrigation of Aridisols tends to promote

Accepted Answer

A)  gleization. 
B)  podzolation. 
C)  salinization. 
D)  laterization. 
A)  gleization. 
B)  podzolation. 
C)  salinization. 
D)  laterization.

Question 2

A soil horizon that is 20 to 30 percent or more organic matter is labeled

Accepted Answer

A)  A. 
B)  B. 
C)  C. 
D)  O. 
A)  A. 
B)  B. 
C)  C. 
D)  O.

Question 3

Oxisols are not very fertile.

Accepted Answer

A) True 
 B)False

Question 4

The R horizon refers to

Accepted Answer

A)  unweathered sediment or consolidated bedrock. 
B)  soils redeveloped through reclamation. 
C)  a zone of eluviation in the soil horizon. 
D)  the basic mapping unit of soils in an area. 
A)  unweathered sediment or consolidated bedrock. 
B)  soils redeveloped through reclamation. 
C)  a zone of eluviation in the soil horizon. 
D)  the basic mapping unit of soils in an area.

Question 5

Irrigation runoff can sometimes kill wildlife.

Accepted Answer

A) True 
 B)False

Question 6

Acidic soils

Accepted Answer

A)  are generally defined as soils with a pH of about 6 or less. 
B)  cause more rapid weathering and leaching of nutrients. 
C)  are generally very fertile. 
D)  all of the above 
E)  Only A and B are true. 
A)  are generally defined as soils with a pH of about 6 or less. 
B)  cause more rapid weathering and leaching of nutrients. 
C)  are generally very fertile. 
D)  all of the above 
E)  Only A and B are true.

Question 7

Over 15,000 soil series have been classified up to this time in the United States and Canada.

Accepted Answer

A) True 
 B)False

Question 8

Selenium contamination of western soils is related to

Accepted Answer

A)  the application of chemicals by farmers. 
B)  reliance of natural precipitation with no irrigation. 
C)  concentration of a natural element in the soil through irrigation drainage collection. 
D)  none of the above 
A)  the application of chemicals by farmers. 
B)  reliance of natural precipitation with no irrigation. 
C)  concentration of a natural element in the soil through irrigation drainage collection. 
D)  none of the above

Question 9

The physical and chemical weathering of the upper lithosphere produces

Accepted Answer

A)  soil. 
B)  materials from which soils can develop. 
C)  true soil with no further organic activity. 
D)  soil fertility. 
A)  soil. 
B)  materials from which soils can develop. 
C)  true soil with no further organic activity. 
D)  soil fertility.

Question 10

Which type of soil is the least developed?

Accepted Answer

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

Question 11

Which diagnostic epidpedon is associated with the fertile soils of the central U.S., is dark in color, humus-rich, and has good structure?

Accepted Answer

A)  ochric 
B)  histic 
C)  mollic 
D)  plaggen 
A)  ochric 
B)  histic 
C)  mollic 
D)  plaggen

Question 12

B horizons tend to

Accepted Answer

A)  accumulate humus. 
B)  accumulate clay, iron and aluminum. 
C)  lose materials by leaching. 
D)  be dominated by eluviation processes. 
A)  accumulate humus. 
B)  accumulate clay, iron and aluminum. 
C)  lose materials by leaching. 
D)  be dominated by eluviation processes.

Question 13

Farmers are concerned with soil from the standpoint of

Accepted Answer

A)  geomorphology. 
B)  pedology. 
C)  edaphology. 
D)  plantology. 
A)  geomorphology. 
B)  pedology. 
C)  edaphology. 
D)  plantology.

Question 14

Mollisols are associated with

Accepted Answer

A)  the greatest timber harvests in the world. 
B)  the greatest grain harvests in the world. 
C)  floodplains. 
D)  intense leaching. 
A)  the greatest timber harvests in the world. 
B)  the greatest grain harvests in the world. 
C)  floodplains. 
D)  intense leaching.

Question 15

Soil consistency refers to

Accepted Answer

A)  the uniformity of particle size. 
B)  the uniformity of ped types. 
C)  the soil's resistance to breaking and manipulation under different moisture conditions. 
D)  the soil's ability to consistently maintain a given level of soil moisture. 
A)  the uniformity of particle size. 
B)  the uniformity of ped types. 
C)  the soil's resistance to breaking and manipulation under different moisture conditions. 
D)  the soil's ability to consistently maintain a given level of soil moisture.

Question 16

The basic sampling unit in soil surveys is called

Accepted Answer

A)  a polypedon. 
B)  a pedon. 
C)  the A horizon. 
D)  a horizon. 
A)  a polypedon. 
B)  a pedon. 
C)  the A horizon. 
D)  a horizon.

Question 17

A high CEC means that

Accepted Answer

A)  soil colloids can store and exchange more cations. 
B)  activity between colloids and the soil solution is high. 
C)  the soil is probably fertile. 
D)  All of these are correct. 
A)  soil colloids can store and exchange more cations. 
B)  activity between colloids and the soil solution is high. 
C)  the soil is probably fertile. 
D)  All of these are correct.

Question 18

The moist versions of mollisols are the

Accepted Answer

A)  Oxisols. 
B)  Ultisols. 
C)  Vertisols. 
D)  Alfisols. 
A)  Oxisols. 
B)  Ultisols. 
C)  Vertisols. 
D)  Alfisols.

Question 19

The soil at the base of a hillslope is likely to be ________ compared to the soil on the slope.

Accepted Answer

A)  thicker 
B)  wetter 
C)  nutrient-rich 
D)  all of these 
E)  none of these 
A)  thicker 
B)  wetter 
C)  nutrient-rich 
D)  all of these 
E)  none of these

Question 20

The general name for any distinct layer in a pedon is

Accepted Answer

A)  plate. 
B)  eluviation zone. 
C)  illuviation zone. 
D)  horizon. 
A)  plate. 
B)  eluviation zone. 
C)  illuviation zone. 
D)  horizon.

Irrigation of Aridisols tends to promote

A soil horizon that is 20 to 30 percent or more organic matter is labeled

Oxisols are not very fertile.

The R horizon refers to

Irrigation runoff can sometimes kill wildlife.

Acidic soils

Over 15,000 soil series have been classified up to this time in the United States and Canada.

Selenium contamination of western soils is related to

The physical and chemical weathering of the upper lithosphere produces

Which type of soil is the least developed?

Which diagnostic epidpedon is associated with the fertile soils of the central U.S., is dark in color, humus-rich, and has good structure?

B horizons tend to

Farmers are concerned with soil from the standpoint of

Mollisols are associated with

Soil consistency refers to

The basic sampling unit in soil surveys is called

A high CEC means that

The moist versions of mollisols are the

The soil at the base of a hillslope is likely to be ________ compared to the soil on the slope.

The general name for any distinct layer in a pedon is

Foundations of Geography

Solar Energy, Seasons, and the Atmosphere

Atmospheric Energy and Global Temperatures

Atmospheric and Oceanic Circulation

Atmospheric Water and Weather

Water Resources

Global Climate Systems

The Dynamic Planet

Earthquakes and Volcanoes

Weathering, Karst Landscapes, and Mass Movement

Wind Processes and Desert Landscapes

The Oceans, Coastal Processes, and Landforms

Glacial and Penglacial Landscapes

Ecosystems and Biomes

Earth and the Human Denominator

Filters

Exam 15: The Geography of Soils

Irrigation of Aridisols tends to promote

A soil horizon that is 20 to 30 percent or more organic matter is labeled

Oxisols are not very fertile.

The R horizon refers to

Irrigation runoff can sometimes kill wildlife.

Acidic soils

Over 15,000 soil series have been classified up to this time in the United States and Canada.

Selenium contamination of western soils is related to

The physical and chemical weathering of the upper lithosphere produces

Which type of soil is the least developed?

Which diagnostic epidpedon is associated with the fertile soils of the central U.S., is dark in color, humus-rich, and has good structure?

B horizons tend to

Farmers are concerned with soil from the standpoint of

Mollisols are associated with

Soil consistency refers to

The basic sampling unit in soil surveys is called

A high CEC means that

The moist versions of mollisols are the

The soil at the base of a hillslope is likely to be ________ compared to the soil on the slope.

The general name for any distinct layer in a pedon is

Foundations of Geography

Solar Energy, Seasons, and the Atmosphere

Atmospheric Energy and Global Temperatures

Atmospheric and Oceanic Circulation

Atmospheric Water and Weather

Water Resources

Global Climate Systems

The Dynamic Planet

Earthquakes and Volcanoes

Weathering, Karst Landscapes, and Mass Movement

Wind Processes and Desert Landscapes

The Oceans, Coastal Processes, and Landforms

Glacial and Penglacial Landscapes

Ecosystems and Biomes

Earth and the Human Denominator

Filters