ENR3001 Exam With Verified
Solution
Dark colored igneous rocks are enriched in silicon (Si), aluminum (Al), potassium (K)
and sodium (Na). and deficient in iron (Fe), calcium (Ca) and magnesium (Mg). - Answer
False
Sediment transported and deposited by glacial meltwater (glaciofluvial) is - Answer
outwash
In travelling from west to east, Ohio bedrock exposures generally become younger in
age. - Answer True
All outcropping native bedrock in Ohio was formed during - Answer the Paleozoic era
Most natural organic (peat) deposits in Ohio are found within the area once covered by
glacial ice. - Answer True
Slate is created by metamorphic alteration of - Answer shale
Glacial landform composed of a thin veneer of glacial till deposited by melting ice during
glacial retreat. - Answer ground moraine
In the western half of Ohio, most soils are developed from some type of glacial deposit. -
Answer True
Glacial outwash tends to be unstratified and poorly sorted. - Answer False
Individual grains of intrusive (slowly cooled magma) igneous rocks cannot be seen
without magnification. - Answer False
Identify the location of the cross-hatched area shown below. - Answer T.1S R.1W Sec 10
In the topographic image below, the horizontal distance from the hilltop to the valley
floor is 2192 ft. Find the percent slope and the elevation. - Answer 14, 20
In the topographic image below, the horizontal distance from the hilltop to the and
elevation contour interval. - Answer 5.4, 10
The density of a settling suspension of soil particles gradually increases with time. -
Answer False
Remains a ball when squeezed, 1-2 inch long ribbons and excessively smooth feel is -
Answer a silty clay loam texture
The buoyant force on a floating hydrometer is equal to the weight of the suspension
displaced by the hydrometer. - Answer True
, Particles of high density have higher settling velocities (fall faster in a suspension)
compared to particles of low density. - Answer True
Remains a ball when squeezed, <1-inch long ribbons and neither excessively smooth nor
excessively gritty feel is - Answer a loam texture
A 10-gram sample of mineral soil composed of 40% sand and 20% silt contains 4 grams
of clay. - Answer True
Remains a ball when squeezed but does not ribbon is - Answer a loamy sand texture
In a suspension of settling particles, the particle settling velocity decreases with -
Answer none of the choices given??
Ca2+ is a better dispersant of clay particles than Na+. - Answer False
Dry sandy soils evolve more heat of wetting compared to dry clayey soils - Answer False
Attraction among water molecules for each other - Answer cohesion
Atterberg limits are water contents at which soils undergo major changes of state (i.e.
solid, semi-solid, plastic, liquid). - Answer True
A soil with LEP >9 is likely to be unsafe for building foundations. - Answer True
Atterberg limits generally decrease with decreasing clay content. - Answer True
Clayey soils can receive less water before reaching their liquid limit compared to sandy
soils - Answer False
Atterberg limits are water contents at which soils undergo changes in behavior -
Answer True
A model for the structure of silicate clay minerals that best fits the results of clay
surface area measurements is - Answer the layer model
Soils with low clay content generally have low plasticity index. - Answer True
Adsorbed water - Answer expresses restricted molecular motions (stretching, rotating,
vibrating)
Soil texture class that has the lowest permanent wilting point - Answer sand
Soil texture class that has the highest bulk density - Answer sandy loam
Soil texture class containing the most gravitational water - Answer NOT clay loam
Soil texture class that has the fastest rate of capillary rise - Answer NOT silt loam
A soil holds 10 gallons of water at field capacity and retains 2 gallons of water at the
wilting point. The available water of this soil is - Answer 8 gallons
Solution
Dark colored igneous rocks are enriched in silicon (Si), aluminum (Al), potassium (K)
and sodium (Na). and deficient in iron (Fe), calcium (Ca) and magnesium (Mg). - Answer
False
Sediment transported and deposited by glacial meltwater (glaciofluvial) is - Answer
outwash
In travelling from west to east, Ohio bedrock exposures generally become younger in
age. - Answer True
All outcropping native bedrock in Ohio was formed during - Answer the Paleozoic era
Most natural organic (peat) deposits in Ohio are found within the area once covered by
glacial ice. - Answer True
Slate is created by metamorphic alteration of - Answer shale
Glacial landform composed of a thin veneer of glacial till deposited by melting ice during
glacial retreat. - Answer ground moraine
In the western half of Ohio, most soils are developed from some type of glacial deposit. -
Answer True
Glacial outwash tends to be unstratified and poorly sorted. - Answer False
Individual grains of intrusive (slowly cooled magma) igneous rocks cannot be seen
without magnification. - Answer False
Identify the location of the cross-hatched area shown below. - Answer T.1S R.1W Sec 10
In the topographic image below, the horizontal distance from the hilltop to the valley
floor is 2192 ft. Find the percent slope and the elevation. - Answer 14, 20
In the topographic image below, the horizontal distance from the hilltop to the and
elevation contour interval. - Answer 5.4, 10
The density of a settling suspension of soil particles gradually increases with time. -
Answer False
Remains a ball when squeezed, 1-2 inch long ribbons and excessively smooth feel is -
Answer a silty clay loam texture
The buoyant force on a floating hydrometer is equal to the weight of the suspension
displaced by the hydrometer. - Answer True
, Particles of high density have higher settling velocities (fall faster in a suspension)
compared to particles of low density. - Answer True
Remains a ball when squeezed, <1-inch long ribbons and neither excessively smooth nor
excessively gritty feel is - Answer a loam texture
A 10-gram sample of mineral soil composed of 40% sand and 20% silt contains 4 grams
of clay. - Answer True
Remains a ball when squeezed but does not ribbon is - Answer a loamy sand texture
In a suspension of settling particles, the particle settling velocity decreases with -
Answer none of the choices given??
Ca2+ is a better dispersant of clay particles than Na+. - Answer False
Dry sandy soils evolve more heat of wetting compared to dry clayey soils - Answer False
Attraction among water molecules for each other - Answer cohesion
Atterberg limits are water contents at which soils undergo major changes of state (i.e.
solid, semi-solid, plastic, liquid). - Answer True
A soil with LEP >9 is likely to be unsafe for building foundations. - Answer True
Atterberg limits generally decrease with decreasing clay content. - Answer True
Clayey soils can receive less water before reaching their liquid limit compared to sandy
soils - Answer False
Atterberg limits are water contents at which soils undergo changes in behavior -
Answer True
A model for the structure of silicate clay minerals that best fits the results of clay
surface area measurements is - Answer the layer model
Soils with low clay content generally have low plasticity index. - Answer True
Adsorbed water - Answer expresses restricted molecular motions (stretching, rotating,
vibrating)
Soil texture class that has the lowest permanent wilting point - Answer sand
Soil texture class that has the highest bulk density - Answer sandy loam
Soil texture class containing the most gravitational water - Answer NOT clay loam
Soil texture class that has the fastest rate of capillary rise - Answer NOT silt loam
A soil holds 10 gallons of water at field capacity and retains 2 gallons of water at the
wilting point. The available water of this soil is - Answer 8 gallons
