Flashcards in Soils iClicker Quiz 2 Deck (19):
Color, texture, structure, density, porosity, compaction
Soil color factors
Organic matter, water, presence and oxidation state of iron and manganese
Chart used for soil color
Munsell color chart
What does this describe?
Different sized particles
Soil texture influences:
Bulk density, water holding capacity, cation(gas) exchange, aeration, erodability, drivability, strength
2 - .05 mm
.05 - .002 mm
Is silt cohesive?
______ - many primary soil particles held in a single cluster
Physical processes of soil aggregates
Wetting drying, freezing thawing
Biological processes of soil aggregates
Burrowing organisms, plant root extension, root, fungal, and bacterial secretions
2 types of soil density?
Particle density - mass of solids/volume of solids
Bulk density - mass of solids/ volume of soil
Percentage if earth's freshwater in soils?
Forces that affect potential energy of soil water:
3 types of water movement in soil:
Saturated flow : gravity
Unsaturated flow: matric
Only water held against gravity renaming
-10 to -30 kPa