Question 1

The composition of a soil is controlled by

Accepted Answer

A)  The composition of bedrock on which it forms. 
B)  Climate. 
C)  The extent of chemical weathering. 
D)  All of the choices are correct.

Question 2

Which of the following minerals is/are least susceptible to chemical weathering in a moist,temperate climate?

Accepted Answer

A)  Quartz 
B)  Calcite 
C)  Ferromagnesians 
D)  Feldspars

Question 3

Consequences of sediment pollution include more rapid infilling of reservoirs and clogging of stream channels.

Accepted Answer

A) True 
 B)False

Question 4

One of the key components of chemical weathering is the presence of

Accepted Answer

A)  Water. 
B)  Neutrality. 
C)  Alkalinity. 
D)  Acidity.

Question 5

The presence of iron in a soil may give it a yellow or red color from iron oxides.

Accepted Answer

A) True 
 B)False

Question 6

Soil erosion is a significant contributor to this

Accepted Answer

A)  Storm water runoff pollution. 
B)  Ground water recharge. 
C)  Deforestation. 
D)  Global warming.

Question 7

Irrigation in dry climates may dissolve and thus mobilize,toxic elements in the soil.

Accepted Answer

A) True 
 B)False

Question 8

The process of planting alternating bands of different crops to disrupt wind flow and slow wind erosion is

Accepted Answer

A)  Strip cropping. 
B)  Contour plowing. 
C)  Terracing. 
D)  Lateritization.

Question 9

Lateritic soils

Accepted Answer

A)  Are rich in nutrients. 
B)  Are the common soils of tropical rain forests. 
C)  Are kept soft and workable by the action of sun and rain. 
D)  All of the choices are correct.

Question 10

Off-road vehicles should only use existing roads to minimize their environmental impact.

Accepted Answer

A) True 
 B)False

Question 11

The moderately leached soil rich in aluminum and iron compounds that is characteristic of the eastern United States is a ____________ type of soil.

Accepted Answer

A)  Marble 
B)  Pedocal 
C)  Laterite 
D)  Pedalfer

Question 12

Soil erosion from farmland can be reduced by all of the following methods except

Accepted Answer

A)  Contour plowing. 
B)  Terracing of fields. 
C)  Complete clearing of fields after harvest. 
D)  Use of windbreaks.

Question 13

Chemical and mechanical weathering are two processes,unrelated to each other.

Accepted Answer

A) True 
 B)False

Question 14

Higher temperatures along with moister climates generally increase the rate of

Accepted Answer

A)  Biological weathering only. 
B)  Biological and chemical weathering. 
C)  Biological and mechanical weathering. 
D)  Biological, chemical and mechanical weathering.

Question 15

Best management practices

Accepted Answer

A)  Are measures implemented to minimize soil erosion. 
B)  Are farming methods that add fertilizer to soil. 
C)  Are livestock feeding techniques that increase the production of dairy and meat products. 
D)  Are programs for better management of forests.

Question 16

The tendency to form clumps or peds is undesirable in a soil to be used for agriculture.

Accepted Answer

A) True 
 B)False

Question 17

The typical soil of a tropical rain forest also is excellent for farming because it supports such lush plant growth.

Accepted Answer

A) True 
 B)False

Question 18

The finer rock fragments are,the more subject they are to chemical weathering,because finer fragments have a higher surface-to-volume ratio.

Accepted Answer

A) True 
 B)False

Question 19

Feldspars chemically weather through a reaction with water to become clay minerals.This chemical reaction is especially rapid

Accepted Answer

A)  The more acidic the water. 
B)  The more alkaline the water. 
C)  The lower the water temperature. 
D)  For larger feldspar crystals.

Question 20

The U.S.Department of Agriculture has become increasingly concerned about soil erosion,because expansion of agricultural activities between 1982 and 1992 resulted in sharp increases in rates of soil erosion loss from farmland.

Accepted Answer

A) True 
 B)False

Exam 12: Weathering, erosion, and Soil Resources

The composition of a soil is controlled by

Which of the following minerals is/are least susceptible to chemical weathering in a moist,temperate climate?

Consequences of sediment pollution include more rapid infilling of reservoirs and clogging of stream channels.

One of the key components of chemical weathering is the presence of

The presence of iron in a soil may give it a yellow or red color from iron oxides.

Soil erosion is a significant contributor to this

Irrigation in dry climates may dissolve and thus mobilize,toxic elements in the soil.

The process of planting alternating bands of different crops to disrupt wind flow and slow wind erosion is

Lateritic soils

Off-road vehicles should only use existing roads to minimize their environmental impact.

The moderately leached soil rich in aluminum and iron compounds that is characteristic of the eastern United States is a ____________ type of soil.

Soil erosion from farmland can be reduced by all of the following methods except

Chemical and mechanical weathering are two processes,unrelated to each other.

Higher temperatures along with moister climates generally increase the rate of

Best management practices

The tendency to form clumps or peds is undesirable in a soil to be used for agriculture.

The typical soil of a tropical rain forest also is excellent for farming because it supports such lush plant growth.

The finer rock fragments are,the more subject they are to chemical weathering,because finer fragments have a higher surface-to-volume ratio.

Feldspars chemically weather through a reaction with water to become clay minerals.This chemical reaction is especially rapid

The U.S.Department of Agriculture has become increasingly concerned about soil erosion,because expansion of agricultural activities between 1982 and 1992 resulted in sharp increases in rates of soil erosion loss from farmland.