Flashcards
Soils Ch. 3
Cards in this deck (17)
- 1Soil solid phaseminerals with humus
- 2Soil liquid and gaseous phasesabout 50%, changes as soil gains or loses moisture
- 3Soil separatesSand, silt, clay
- 4SandGritty, made of mostly silica, quartz is dominant mineral
- 5SiltSmaller than sand, smooth,
- 6ClayMade of secondary materials, altered by recrystallization, large surface area to volume, float on water
- 7Soil texturedegree of fineness or coarseness of soil
- 8Soil porositypercent of pore space in soil
- 9Densitylooseness or tightness of soil
-compacted soil has reduce pore space - 10Soil structureclustering arrangement of individual particles into units of various shapes
- 11Pedssoil aggregates
- 12Soil structural typesgranular, platy, blocky, prismatic, columnar
- 13Soil consistencydescription of how soil will react to mechanical manipulation
- 14Plastic limitmoisture content where soil crumbles as rolled into water (less water)
- 15Liquid limitmoisture content where soil flows (more water)
- 16Plastic indexdifference between plastic and liquid limit values
- 17Soil colorreflects quantity of humus and chemical form of iron present
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- Environmental Studies Flashcards on Soils Ch. 3, created by Kierra Yang on 19/04/2025.
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- Kierra Yang
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