Soil Formation and Composition

Front

What are the main components contained in soil?

Back

Small rock fragments, air, water, organic matter, and minerals.

Front

Is soil the same everywhere in the world?

Back

False. Soil varies in composition and characteristics depending on location.

Front

What is the process called when soil is moved from one place to another?

Back

Erosion.

Front

What does soil formation begin with?

Back

The weathering of rock.

Front

What is decaying organic matter in soil called?

Back

Humus.

Front

What is the top layer of soil called?

Back

Topsoil.

Front

What is the term for the breakdown of rocks into smaller particles?

Back

Weathering.

Front

What is the process of depositing soil and sediment in a new location?

Back

Deposition.

Front

What type of soil is a mixture of sand, silt, and clay?

Back

Loam.

Front

What is the role of earthworms in soil?

Back

They aerate the soil and help decompose organic matter.