OLT Soils Review

Which of the following is NOT a type of soil particle?

• sand

• clay

• silt

• rock

Which soil component makes up about 5% of an ideal soil?

• water

• organic matter

• air

• minerals

Which soil component makes up about 45% of an ideal soil?

• water

• organic matter

• air

• minerals

Which soil component makes up about 25% of an ideal soil?

• water

• organic matter

• air

• water and air

What is the area between soil particles called?

• pore spaces

• humus

• soil profile

• horizons

Which soil particle is the largest in size?

• sand

• clay

• silt

• rock

Which soil particle is the smallest in size?

• sand

• clay

• silt

• rock

Which soil horizon is also known as “bedrock”?

• A Horizon

• B Horizon

• C Horizon

• R Horizon

Which soil horizon is commonly called the subsoil?

• A Horizon

• B Horizon

• C Horizon

• D Horizon

Which soil horizon is contains decomposed plants and animals?

• A Horizon

• B Horizon

• C Horizon

• O Horizon