Soil Composition/Soil Profile

Front

Which of the following is NOT one of the three types of soil? Options: clay, sand, silt, mud

Back

mud

Front

Layers of soil are also known as:

Back

Soil Horizons

Front

Soil formation begins with the weathering of

Back

bedrock.

Front

What is humus?

Back

organic matter

Front

Order sediment particle size from smallest to largest: silt, sand, clay, sand, silt, clay, clay, sand, silt, clay, silt, sand.

Back

clay, silt, sand

Front

Which horizon in the soil profile represents the organic material? Options: Horizon O (Humus), Horizon A, Horizon B, Horizon C

Back

Horizon O (Humus)

Front

In which horizon do most animals such as bugs live?

Back

Topsoil

Front

Which layer is the parent material? Horizon O, Horizon A, Horizon B, Horizon C, Horizon R

Back

Horizon C

Front

Which layer is the subsoil? Horizon O, Horizon A, Horizon B, Horizon C, Horizon R

Back

Horizon B

Front

The dark organic material formed in soil from the decayed remains of plants and animals

Back

humus