ENR 3001 NEWEST ACTUAL EXAM WITH COMPLETE
QUESTIONS AND CORRECT
ANSWERS//VERIFIED//GRADED A+// LATEST VERSION
Bulk density increases with increasing % pore space
False
Water remaining in a soil 2-3 days after draining from the saturated
state is referred to as gravitational water
False
What is the origin of all native bedrock in Ohio?
Sedimentary origin
Sediment transported and deposited by glacial meltwater (glaciofluvial)
is
outwash
In the western half of Ohio, most solids are developed from some type
of glacial deposit
True
Residual and colluvial soils are very common in the unglaciated,
northwestern portion of Ohio
False (they are common in the southeastern portion)
In traveling from east to west, Ohio bedrock exposures generally
become younger in age
,False
Glacial outwash tends to be unstratified and poorly sorted
False
Marble is created by metamorphic alteration of limestone
True
Most natural organic (peat) deposits in Ohio are found within the area
once covered by glacial ice
True
Individual grains of intrusive (slowly cooled magma) igneous rocks
cannot be seen without magnification
False
Slate is formed from metamorphic alteration of shale
True
Soils with low clay content generally have low plasticity index
True
A soil with COLE= 6% is likely to be unsafe for building foundations
False
Soils with high plasticity index can receive more water before reaching
their liquid limit compared to soils with low plasticity index
True
Atterberg limits are water contents at which soils undergo major
changes of state (i.e.solid, semi-solid, plastic, liquid)
,True
Coefficient of linear extensibility (COLE) generally increases with
decreasing clay content
False
The liquid limit is the clay content at which a soil becomes fluid
False
The lower plastic limit is the water content at which the soil passes from
a plastic state to a semi-solid or solid state
True
A soil with a liquid limit= 25% will become fluid when its clay content =
25%
False
Atterberg limits generally decrease with decreasing clay content
True
The plasticity index is the difference between the liquid limit (upper
plastic limit) and the lower plastic limit
True
Ca^2+ is a better dispersant of clay particles than Na^+
False
Al^3+ is a better flocculant of clay particles than Ca^2+
True
, Particles of high density have higher settling velocities (fall faster in a
suspension) compared to particles of low density
True
Sand particles composed of quartz have higher settling velocities than
silt particles also composed of quartz
True
The density of a settling suspension of soil particles gradually increases
with time
False
Soil particles > 2 mm diameter are referred to as coarse fragments
True
A 10-gram sample of mineral soil composed of 40% sand and 20% silt
contains 4 grams of clay
True
Settling velocities of particles falling within a suspension decrease with
increasing temperature of the suspension
False
Density of water increases with decreasing temperature
True
A 2.57- gram sample of orthoclase, having a particle density= 2.57 g
cm^-3 occupies a smaller volume compared to a 5.14- gram sample of
magnetite, having a particle density= 5.14 g cm^-3
False
QUESTIONS AND CORRECT
ANSWERS//VERIFIED//GRADED A+// LATEST VERSION
Bulk density increases with increasing % pore space
False
Water remaining in a soil 2-3 days after draining from the saturated
state is referred to as gravitational water
False
What is the origin of all native bedrock in Ohio?
Sedimentary origin
Sediment transported and deposited by glacial meltwater (glaciofluvial)
is
outwash
In the western half of Ohio, most solids are developed from some type
of glacial deposit
True
Residual and colluvial soils are very common in the unglaciated,
northwestern portion of Ohio
False (they are common in the southeastern portion)
In traveling from east to west, Ohio bedrock exposures generally
become younger in age
,False
Glacial outwash tends to be unstratified and poorly sorted
False
Marble is created by metamorphic alteration of limestone
True
Most natural organic (peat) deposits in Ohio are found within the area
once covered by glacial ice
True
Individual grains of intrusive (slowly cooled magma) igneous rocks
cannot be seen without magnification
False
Slate is formed from metamorphic alteration of shale
True
Soils with low clay content generally have low plasticity index
True
A soil with COLE= 6% is likely to be unsafe for building foundations
False
Soils with high plasticity index can receive more water before reaching
their liquid limit compared to soils with low plasticity index
True
Atterberg limits are water contents at which soils undergo major
changes of state (i.e.solid, semi-solid, plastic, liquid)
,True
Coefficient of linear extensibility (COLE) generally increases with
decreasing clay content
False
The liquid limit is the clay content at which a soil becomes fluid
False
The lower plastic limit is the water content at which the soil passes from
a plastic state to a semi-solid or solid state
True
A soil with a liquid limit= 25% will become fluid when its clay content =
25%
False
Atterberg limits generally decrease with decreasing clay content
True
The plasticity index is the difference between the liquid limit (upper
plastic limit) and the lower plastic limit
True
Ca^2+ is a better dispersant of clay particles than Na^+
False
Al^3+ is a better flocculant of clay particles than Ca^2+
True
, Particles of high density have higher settling velocities (fall faster in a
suspension) compared to particles of low density
True
Sand particles composed of quartz have higher settling velocities than
silt particles also composed of quartz
True
The density of a settling suspension of soil particles gradually increases
with time
False
Soil particles > 2 mm diameter are referred to as coarse fragments
True
A 10-gram sample of mineral soil composed of 40% sand and 20% silt
contains 4 grams of clay
True
Settling velocities of particles falling within a suspension decrease with
increasing temperature of the suspension
False
Density of water increases with decreasing temperature
True
A 2.57- gram sample of orthoclase, having a particle density= 2.57 g
cm^-3 occupies a smaller volume compared to a 5.14- gram sample of
magnetite, having a particle density= 5.14 g cm^-3
False
