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PSS Final Exam 1 Questions & Answers 100% CORRECT 2024/2025
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PSS Final Exam 1 Questions & Answers 100% CORRECT 2024/2025 the upper layers of soil that do not include the transition zone between soil and bedrock are called the _____? - ANSWERSSolum which of the following soil structural types is most likely to impede water movement in a soil profile? ...

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  • August 13, 2024
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  • 2024/2025
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PSS Final Exam 1 Questions & Answers
100% CORRECT 2024/2025

the upper layers of soil that do not include the transition zone between soil and bedrock are called the
_____? - ANSWERSSolum



which of the following soil structural types is most likely to impede water movement in a soil profile? -
ANSWERSPlaty



the layers of contrasting material found when one digs a hole in the ground are called -
ANSWERShorizons



these parent materials typically form in wet areas with low decomposition rates that may also receive
runoff from surrounding uplands - ANSWERSorganic



a soil developed in this type of parent material will likely have properties closely related to the bedrock
below the C horizon - ANSWERSresidual



debris that has been ground, transported, and deposited directly by the movement of large ice sheets -
ANSWERStill



water deposited parent material that are further classified into floodplains, fans, and deltas -
ANSWERSalluvial



made of poorly sorted rock fragments detached from heights above and carried downslope by gravity,
potentially assisted by wind and water - ANSWERScolluvial



wind-transported parent materials that include dune sand, loses, dust, and volcanic ash -
ANSWERSeolian

, of the three particle size classes that make up the fine earth fraction, name the one that has the highest
specific surface area - ANSWERSclay



organic matter constitutes only 1 or 2 percent of the soil by weight, and has a negligible influence on soil
properties - ANSWERSfalse



the C horizons are generally more completely weathered than the overlying horizons - ANSWERSfalse



compared to a similar soil under minimal or no-tillage, a soil with a long history of conventional tillage
would have less macropore space - ANSWERStrue



chemical weathering is accelerated by water, oxygen, and organic/inorganic acids moving down through
the regolith - ANSWERStrue



the topsoil horizons are the most reliable determinant of soil classification - ANSWERSfalse



what subhorizon designations is most likely to be associated with an A master horizon? - ANSWERSb-
buried horizon



what soil-forming processes is most likely responsible for formation of a illuvial horizon - ANSWERS



quartz is a highly resistant mineral that has not been altered physically to chemically since its initial
formation. what category does quartz belong to? - ANSWERSprimary mineral



mechanical weathering processes is described by ________? - ANSWERSabrasion of primary minerals by
wind and water



list the six ecological roles of soils - ANSWERS- engineering medium

- habitat for soil organisms

- atmospheric regulator

- regulates the water supply

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