2.5 Soil Formation Vocabulary

Vocabulary flashcards covering key soil formation terms.

Soil

A loose mixture of rock fragments, organic material, water, and air that can support the growth of vegetation.

Humus

Dark, organic material formed in soil from the decayed remains of plants and animals.

Soil profile

A vertical section of soil that shows the layers, or horizons.

Soil horizon

Each layer of soil within a soil profile.