Soil
Horizons
Properties
Sand, Silt and Clay
pH
100
Weathered Rock Organic Matter
Soil is the mixture of _____________ ___________ and ______________ _________ that usually covers bedrock.
100
A Horizon
The topsoil or____ ____________ is usually rich in dark-colored organic remains
100
Texture Structure Consistency
Physical properties are __________, ____________, and _____________.
100
Infiltration
Sand Improves soil by improving the water __________________
100
Soil Consistency
_______ ______________ is based on the pH of the soil.
200
Mechanical
________________ weathering breaks solid rock into smaller pieces
200
B Horizon
The subsoil or ___ __________ contains minerals that have been transported deeper by groundwater.
200
Soil Separates
Refers to the size of the individual soil particles, called ______ ________________
200
Silt
_____________ particles are silky or powdery to the touch
200
pH
____ is a measure of the acidity of the soil
300
Organic
Plant & animals add ___________ materials in the form of waste products & dead organisms
300
C Horizon
The partially weathered bedrock or ___ _________ is composed of broken up bedrock on top of the solid bedrock
300
2.0 to 0.05
The mineral size of sand is _____ and ______ mm
300
Clay
____________ grains will stick to one another
300
Distilled water
A neutral product is __________ _________
400
Residual Soil
Soil that has weathered directly from the bedrock beneath it and therefore matches its parent material is called _____________ __________
400
Erosion
Soil __________ is the removal of topsoil by the action of running water or wind.
400
0.05 to 0.002
The mineral size of silt is ________ and _____ mm
400
Fine and Coarse
Very fine,_________, Medium, ________ and very coarse are the size of particles
400
Coke
An acidic product is ________
500
8-14
Range of the pH scale for basic is __________
500
O, A, B, C
Draw the soil profile and label with the horizons
500
less than 0.002
The mineral size of clay is _______ and ____ mm
500
Moderate
______________ structure visible and can be handled without breaking up
500
0-6
Range of the pH scale for acidic is _________
M
e
n
u