Soil Components

The process by which air is circulated in soil?

• aeration

• compost

• water hold capacity

• porosity

What is in soil? (check all that apply)

• air

• water

• minerals

• aeration

• organic matter

What is the term used for how soil is formed from rock over a long period of time?

• parent material

• topsoil

• weathering

• structure

What is the smallest inorganic component of soil?

• sand

• silt

• clay

• gravel

What is the largest component inorganic component of soil?

• sand

• silt

• clay

• organic material

Air makes up about what percentage of soil?

• 5%

• 50%

• 10%

• 25%

Organic matter makes up about what percentage of soil?

• 5%

• 45%

• 25%

• 75%

About how much of soil is made up of minerals or inorganic soil material?

• 10%

• 25%

• 90%

• 45%

What is the name of the soil texture class that is about 30% Sand, 35% Silt and about 35% Clay?

• silt loam

• clay

• loam

• clay loam

What is the name of the soil texture class that is about 20% Sand, 20% Silt and about 80% Clay?

• silt loam

• clay

• loam

• silty clay