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Geology 1403 Exam 2

31 Questions  I  By Qeyroo
Geology Quizzes & Trivia
Geology 1403 EXAM 2

  
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1.  Clay minerals formed from gabbro or diorite bedrock illustrate which kind of weathering?
A.
B.
C.
D.
2.  Why is the humus layer typically thicker in a cool, temperate forest soil than in a tropical rainforest soil?
A.
B.
C.
D.
3.  Frost wedging is the majojr weathering process contributing to the formation of which regolith material?
A.
B.
C.
D.
4.  What portion of an angular fracture-bounded granitic block shows the highest rate of weathering?
A.
B.
C.
D.
5.  Which of the following describes a characteristic process in the formation of a pedalfer soil?
A.
B.
C.
D.
6.  Ln theRockyMountain regionof the United States,north-facingslopes(downhill directionis toward the north)aretyPicallymore moist and heavilyforested than south-facingslopes.Why?
A.
B.
C.
D.
7.  Clayminerals,silica(SiO2),and dissolved potassium bicarbonatein the soil waterareproductsof which process?
A.
B.
C.
D.
8.  What two factorsspeedup ratesof chemical reactionandrveatheringin rocks and soils?
A.
B.
C.
D.
9.  In terrain with steephill slopes,which crop and cultivation technique will minimize soil erosion?
A.
B.
C.
D.
10.  From the land surface downward to the unweathered bedrock, which of the following is the correct order of the different soil horizons?
A.
B.
C.
D.
11.  Whictr one of the following statements concerning mechanical weathcring is not true?
A.
B.
C.
D.
12.  The finely divided,red,brown, and yellow soil-coloringmineralsoriginateby what process?
A.
B.
C.
D.
13.  Wnicn term describes a soil formed by weathering of the underlying bedrock?
A.
B.
C.
D.
14.  Which of the following best describes the,DustBowl',?
A.
B.
C.
D.
15.   which of the followingis an important, mechanical weathering process for enlarging fractures and extending them deeper into large boulders and bedrock?
A.
B.
C.
D.
16.  Which of the following bes tdescribes sets of fractures in relatively fresh bedrock,suchasgranitc,that are roughly parallel to the land surface?
A.
B.
C.
D.
17.  Assume that water filling a crack in a rock undergoes cycles of freezing and melting. Which of the following statement is true?
A.
B.
C.
D.
18.  Which one of the following statements best describes erosion?
A.
B.
C.
D.
19.  Quartz weathers readily to aluminum-rich clav minerals.
A.
B.
20.  Abundant moistureand warm temperafures result in high ratesof chemical weathering.
A.
B.
21.  Feldspars commonly decompose during weathering to clayminerals,silica,andsolubleconstituents.
A.
B.
22.  Humus is a concentration of decaying,organicmatter in theB-horizonsof lateritic soils.
A.
B.
23.  Calcite,a majorcomPonentof some monumental and building stones,slowlv dissolvesin weaklyacidic waters.
A.
B.
24.  Like most otherliquids,water decreasesin volumewhen it freezes.
A.
B.
25.  Cemical weathering in bedrock below the land surface often begins along joints and sheeting fractures.
A.
B.
26.  Removal of soluble chemical constituents from a soil is termed leaching.
A.
B.
27.  Oxlctation of iron is an important chemical weathering processfor ferromagnesian silicate minerals Iike olivine and biotite.
A.
B.
28.  Sheeting is mainly a process of mechanical rveathering.
A.
B.
29.  Sheeting fractures and exfoliation domes commonly develop in areas with soft, highly fractured bedrock.
A.
B.
30.  Quartz is resistant to weathering and is an important component of sandsin riverbeds and on beaches.
A.
B.
31.   Veryfine-grained,iron oxide particles account for nearly all red, yellow, and brown soilcolors.
A.
B.
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