WorksheetsSoil Horizons Quiz
Total questions: 17
Worksheet time: 9mins
A vertical section of the soil extending vertically through all its horizons and into the parent material.
Soil Horizon
Soil Layer
Soil Profile
A layer of soil, approximately parallel to the surface, with properties that differ from
the horizons above or below it
Soil Profile
Soil Horizon
Soil Layer
A layer in the soil deposited by a geologic force (wind, water, glaciers, oceans, etc.) and
not relating to soil forming process.
Soil Horizon
Soil Profile
Soil Layer
Humus or Organic Layer
A
O
E
B
C
Topsoil
A
O
E
B
C
Contains lots of roots and minerals for growing plants.
A
O
E
B
C
Exit Layer
A
O
E
B
C
Subsoil
A
O
E
B
C
Earth's soils developed from this layer
A
O
E
B
C
Parent Material
A
O
E
B
C
Materials, minerals, organic matter and clay exit this soil profile.
A
O
E
B
C
Bedrock
R
O
E
B
C
Decomposing leaves and lots of organic matter
R
O
E
B
C
One of the components of soil made of tiny particles that holds water well is called _______.
clay
sand
bedrock
nutrients
_______ is very small broken pieces of rock. It is larger than clay and smaller than sand.
dirt
clay
sand
Silt
Small grains of worn-down rock. It has few nutrients and does not hold water.
sand
rock
humus
clay
What type of soil would be 30% sand, 10% clay, and 60% silt? Use the soil texture triangle to identify the type of soil.
Silt Loam
Clay Loam
Loam
