SCSC 301 Exam 1 Review questions and
answers
Soil is a dynamic natural body having properties due to the combined effects of
__________ as modified by topography acting on parent material over time.
A) Weather and temperature
B) Climate and biota
C) slope and time
D) climate and rainfall
E) Organisms and parent material - ANSWERS✔✔ B. Climate and biota
A typical moist surface soil ideally contains _____% water on a volume basis.
A. 5
B. 10
C. 25
D. 45
E. 50 - ANSWERS✔✔ C. 25%
A soil that supports plant life must provide which of the following, EXCEPT
a. nutrients
b. oxygen
c. carbon dioxide
d. water
e. physical support - ANSWERS✔✔ c. Carbon dioxide
, Primary minerals that may weather to form secondary clay minerals in soils include:
a. feldspars, hornblende, and mica
b. feldspars, quartz, and calcite
c. apatite, hornblende, and gypsum
d. apatite, feldspars, and calcite
e. feldspars, hematite, and goethite - ANSWERS✔✔ a. Feldspars, Hornblende, and
Mica
A primary silicate mineral that is resistant to weathering is:
a. hematite
b. apatite
c. mica
d. quartz
e. dolomite - ANSWERS✔✔ d. quartz
Intensive weathering typically results in soils with high concentrations of __________,
because these are secondary minerals that are resistant to further weathering.
a. calcite, dolomite, and gypsum
b. hornblende and feldspar
c. granite and basalt
d. hematite and gibbsite
e. horneblende and marble - ANSWERS✔✔ d. hematite and gibbsite
Which of the following weathers to form silicate clay minerals in soil?
a. hematite
b. quartz
answers
Soil is a dynamic natural body having properties due to the combined effects of
__________ as modified by topography acting on parent material over time.
A) Weather and temperature
B) Climate and biota
C) slope and time
D) climate and rainfall
E) Organisms and parent material - ANSWERS✔✔ B. Climate and biota
A typical moist surface soil ideally contains _____% water on a volume basis.
A. 5
B. 10
C. 25
D. 45
E. 50 - ANSWERS✔✔ C. 25%
A soil that supports plant life must provide which of the following, EXCEPT
a. nutrients
b. oxygen
c. carbon dioxide
d. water
e. physical support - ANSWERS✔✔ c. Carbon dioxide
, Primary minerals that may weather to form secondary clay minerals in soils include:
a. feldspars, hornblende, and mica
b. feldspars, quartz, and calcite
c. apatite, hornblende, and gypsum
d. apatite, feldspars, and calcite
e. feldspars, hematite, and goethite - ANSWERS✔✔ a. Feldspars, Hornblende, and
Mica
A primary silicate mineral that is resistant to weathering is:
a. hematite
b. apatite
c. mica
d. quartz
e. dolomite - ANSWERS✔✔ d. quartz
Intensive weathering typically results in soils with high concentrations of __________,
because these are secondary minerals that are resistant to further weathering.
a. calcite, dolomite, and gypsum
b. hornblende and feldspar
c. granite and basalt
d. hematite and gibbsite
e. horneblende and marble - ANSWERS✔✔ d. hematite and gibbsite
Which of the following weathers to form silicate clay minerals in soil?
a. hematite
b. quartz
