UNIT 3 (ESH 1112)

Layers of soil are also known as:

• soil horizon

• soil profile

• soil series

• soil sheets

Which of the following orders sediment particle size from smallest to largest?

• silt, sand, clay

• clay, sand, silt

• sand, silt, clay

• clay, silt, sand

Which of the horizons in the soil profile shown represent the organic material?

• A

• C

• C

• O

Soil formation begins with the weathering of_______.

• rocks

• litter

• humus

• subsoil

Which soil horizon typically contains the least organic matter?

• A

• B

• C

• O

The first layer of soil, called the A horizon is also known as?

• Topsoil

• Regolith

• Subsoil

• Bedrock

Bedrock is also known as:

• A horizon

• E horizon

• C horizon

• R horizon

Which layer is the subsoil?

• A

• B

• C

• O

Soil formed in volcanic material is known as:

• Andisol

• Inceptisol

• Spodosol

• Aridisol

Which of the following is surface horizon?

• Epipedon horizon

• Endopedon horizon