SCSC 301 FINAL EXAM 2024/2025 VERIFIED
QUESTIONS AND ANSWERS GRADED A+
Soil is a dynamic natural body having properties due to the combined effects of
_______ and biota as modified by ________ acting on parent material over time.
-climate; topography
-Time; Weather
-Topography; parent material
-Biota; climate
-Weather; topography
climate; topography
A soil with 25% _____ and 25% ______by volume is close to ideal
-water; organic matter
-Air; mineral matter
-Air; water
-Mineral matter; organic matter
,Air; water
A soil that supports plant life must provide _____to the roots of the plants
-growth hormones
-Energy sources
-Nitrogen gas (i.e., N2)
-Carbon dioxide
-Oxygen
Oxygen
Soil forming factors always act alone usually one at a time.
This is false. Soil forming factors typically affect soil formation simultaneously.
Some factors may dominate more than others, but usually soil formatting is a result
of combined effects of these factors
A soil contains A, E, B, and C master horizons. The A, E, and B horizons are
considered ____?
-Subsoil
-Soil pedon
,-Soil profile
-Surface soil
-Soil solum
Soil solum
Which of the following are influenced by one or more functions of soil?
-accumulation/degradation of leaves and other plant residues
-Ability to support plant and microbial life
-All of the answers are a result of one or more major soil functions
-Regulation of rain entering streams and rivers
-Quality of water in streams and rivers
All of the answers are a result of one or more major soil functions
A two dimensional (i.e., 2D) view of soil that displays horizons is referred to as a
soil
-Horizon
-Pedon
-Profile
-Regolith
-Solum
profile
, Which element is not essential for plants and is a common constituent of soil
minerals?
-Mg (magnesium)
-Al (aluminum)
-Na (sodium)
-K (potassium)
-Ca (calcium)
Al (aluminum)
Secondary minerals that are resistant to further weathering, such as hematite and
gibbsite, are in the group of minerals called ________, which are usually found in
high quantities in extremely old and highly weathered soils.
-Fe and Al oxides
-Si and Ca carbonates
-Ca and Mg carbonates
-K and N
-Silicates and Mg carbonates
Fe and Al oxides
Which answer includes only secondary minerals?
QUESTIONS AND ANSWERS GRADED A+
Soil is a dynamic natural body having properties due to the combined effects of
_______ and biota as modified by ________ acting on parent material over time.
-climate; topography
-Time; Weather
-Topography; parent material
-Biota; climate
-Weather; topography
climate; topography
A soil with 25% _____ and 25% ______by volume is close to ideal
-water; organic matter
-Air; mineral matter
-Air; water
-Mineral matter; organic matter
,Air; water
A soil that supports plant life must provide _____to the roots of the plants
-growth hormones
-Energy sources
-Nitrogen gas (i.e., N2)
-Carbon dioxide
-Oxygen
Oxygen
Soil forming factors always act alone usually one at a time.
This is false. Soil forming factors typically affect soil formation simultaneously.
Some factors may dominate more than others, but usually soil formatting is a result
of combined effects of these factors
A soil contains A, E, B, and C master horizons. The A, E, and B horizons are
considered ____?
-Subsoil
-Soil pedon
,-Soil profile
-Surface soil
-Soil solum
Soil solum
Which of the following are influenced by one or more functions of soil?
-accumulation/degradation of leaves and other plant residues
-Ability to support plant and microbial life
-All of the answers are a result of one or more major soil functions
-Regulation of rain entering streams and rivers
-Quality of water in streams and rivers
All of the answers are a result of one or more major soil functions
A two dimensional (i.e., 2D) view of soil that displays horizons is referred to as a
soil
-Horizon
-Pedon
-Profile
-Regolith
-Solum
profile
, Which element is not essential for plants and is a common constituent of soil
minerals?
-Mg (magnesium)
-Al (aluminum)
-Na (sodium)
-K (potassium)
-Ca (calcium)
Al (aluminum)
Secondary minerals that are resistant to further weathering, such as hematite and
gibbsite, are in the group of minerals called ________, which are usually found in
high quantities in extremely old and highly weathered soils.
-Fe and Al oxides
-Si and Ca carbonates
-Ca and Mg carbonates
-K and N
-Silicates and Mg carbonates
Fe and Al oxides
Which answer includes only secondary minerals?
