______________ is the principal mineral type in limestone.
a. Silicate clay
b. Calcite
c. Quartz
d. Feldspar
e. Gypsum
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B. Calcite
Mineral matter makes up about ____________ percent by volume of the average moist
surface soil.
a. 25
b. 45
,c. 75
d. 95
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B. 45
Subsoils are cooler than both surface soil and parent material in the _______________.
a. spring
b. winter
c. fall
d. summer
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A. spring
After a two inch rainfall, water which moves in a soil consists of water which moves in
response to difference(s) in:
a. osmotic and matric potentials
b. matric potential only
c. osmotic potential only
d. matric and gravitational potentials
e. gravitational potential only
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D. matric and gravitational potentials
,Soils must supply all of the following except _____________ to higher plants.
a. water
b. physical support
c. carbon dioxide
d. oxygen
e. nutrients
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C. carbon dioxide
A sample of soil had a mass of 120 g when moist, 100 g after drying and had a volume
of 80 cm3. It has a particle density was 2.6 g/cm3. The total porosity in
the soil is:
a. 0.42
b. 0.48
c. 0.52
d. 0.58
e. 1.25
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C. 0.52
Soil temperatures at 5 cm depth ____________ than those at 25 cm depth.
a. exhibit greater daily variation
b. are always lower
c. reach daily maxima and minima later
, d. are always higher
e. none of the above
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A. exhibit greater daily variation
Alluvium is _____.
a. water transported and well sorted
b. water transported and poorly sorted
c. wind transported and well sorted
d. wind transported and poorly sorted
e. ice transported and poorly sorted
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A. water transported and well sorted
To determine the bulk density of an undisturbed core of soil, it is necessary to know
the __________.
a. gravimetric water content
b. core volume
c. porosity
d. particle volume
e. wet weight
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a. Silicate clay
b. Calcite
c. Quartz
d. Feldspar
e. Gypsum
Give this one a try later!
B. Calcite
Mineral matter makes up about ____________ percent by volume of the average moist
surface soil.
a. 25
b. 45
,c. 75
d. 95
Give this one a try later!
B. 45
Subsoils are cooler than both surface soil and parent material in the _______________.
a. spring
b. winter
c. fall
d. summer
Give this one a try later!
A. spring
After a two inch rainfall, water which moves in a soil consists of water which moves in
response to difference(s) in:
a. osmotic and matric potentials
b. matric potential only
c. osmotic potential only
d. matric and gravitational potentials
e. gravitational potential only
Give this one a try later!
D. matric and gravitational potentials
,Soils must supply all of the following except _____________ to higher plants.
a. water
b. physical support
c. carbon dioxide
d. oxygen
e. nutrients
Give this one a try later!
C. carbon dioxide
A sample of soil had a mass of 120 g when moist, 100 g after drying and had a volume
of 80 cm3. It has a particle density was 2.6 g/cm3. The total porosity in
the soil is:
a. 0.42
b. 0.48
c. 0.52
d. 0.58
e. 1.25
Give this one a try later!
C. 0.52
Soil temperatures at 5 cm depth ____________ than those at 25 cm depth.
a. exhibit greater daily variation
b. are always lower
c. reach daily maxima and minima later
, d. are always higher
e. none of the above
Give this one a try later!
A. exhibit greater daily variation
Alluvium is _____.
a. water transported and well sorted
b. water transported and poorly sorted
c. wind transported and well sorted
d. wind transported and poorly sorted
e. ice transported and poorly sorted
Give this one a try later!
A. water transported and well sorted
To determine the bulk density of an undisturbed core of soil, it is necessary to know
the __________.
a. gravimetric water content
b. core volume
c. porosity
d. particle volume
e. wet weight
Give this one a try later!
