General
What are the 4 components of soil?
minerals, organic matter, air, water
What are the 3 texture parts of soil
Clay, sand, and silt
Organic matter is ____
living organisms, fresh plant residues, active & stabilized organic matter
The result of soil being transported by wind
eolian
moves downward through soil by gravity
gravitational water
climate, landscape position, time, parent material, living organisms, wind & water are all factors of what
Soil formation
What is the size of sand in soil?
0.0625–2.0 mm
What do earthworms do as they burrow?
mix organic and mineral material
held in small pores by surface forces
capillary water
Alluvial is....
soil transportation caused by flowing water/rivers/streams
moves soil/rock by wind, water, ice, or gravity
erosion
What is the size of silt in soil?
0.002–0.0625 mm
What do microorganisms do to organic matter?
Turn it into humus (transformation)
Does sand have larger or smaller pores?
Larger
water moving into and downward through soil; affected by texture and structure
infiltration
smaller rock pieces, minerals change, and new minerals are all results of what
weathering
What is the size of clay in soil?
less than 0.002 mm
What does humus do?
it improves soil structure, holds particles together, stores nutrients, holds water
Does clay/silt have loarger or smaller pores
hygroscopic water is....
tightly held to soil particles and unavailable to plants
leaching is when
water moves minerals into lower soil layers
The soil texture determines ____
How soil is used and managed
A = topsoil, B = subsoil, C = substratum/parent material are examples of
soil horizons
calcium carbonate/salt accumulation that can restrict water movement and root growth is a decription of what
Calcarious Zones
lacustrine is....
soil that is formed on top of lake bed sediments.