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SWS3022 Exam 1 | Questions And Answers Latest {} A+ Graded | 100% Verified
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SWS3022 Exam 1 | Questions And Answers Latest {} A+ Graded | 100% Verified
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SWS3022 Exam 1 | Questions And Answers Latest {2024- 2025} A+ Graded | 100%Verified
Know the dimensions of the earth. - Diameter: 8,000 mi
Circumference: 25,000 mi
Understand that definitions of soil depend strongly on the concerns of those making the definitions -
Know the parameters related to soil composition for an idealized surface soil. - Reactive and porous
45% mineral particles
5% organic matter
50% pore space
Be able to identify the basic functions of soils in the environment. - Medium for plant growth
Habitat for organisms/biota
Recycling/ storage of raw materials
Regulator of water supplies
Engineering medium
Know the 4 basic processes involved in soil formation and be able to identify simple examples of each. -
Additions- input of organic matter from leaves, etc
Losses- erosion of soil materials
Transformations- weathering of rocks & minerals, organic transformations
Translocations- water is primary agent, material moving downward
Understand the basics of weathering. - Change in size and arrangement of mineral particles
Synthesis of reactive secondary minerals
Elemental transformations
, Know the 5 soil forming factors and what they mean or imply. - Parent Material- original material
Climate- temp, moisture
High temps/rainfall accelerate soil
Organisms- vegetation, micro/macro organisms
Relief(topography)- altitude, slope
Time- controls extent of other factors
CROPT
Know the type of parent material that dominates Florida's soils. - Loamy marine sediments
Know the origin of the sediments that ultimately formed the parent materials for Florida's soils. -
Appalachians
Understand basically how temperature and rainfall impact soil formation. - Accelerate soil formation
Heat increases rate of physiochemical processes
Water increases weathering rates and translocations
Understand why soils in Florida tend to be more highly developed than soils in the S.W. United States. -
More rainfall, more translocation
What is pedogensis? - The process of soil formation as the result of the combination of soil
forming factors and processes.
What are soil horizons? - Roughly parallel layers in the soil
with varying composition and properties
Know the 6 master horizons discussed and be able to identify/recognize features of each. - O Horizon-
above mineral soil, 20% organic, decomposition
A horizon- topmost mineral horizon, subject to weathering, gas and water exchange, biotic activity,
organic matter, darker than soil below
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