AFNR Lesson 4.2 Vocabulary

Front

The process of being supplied with air.

Back

Aeration

Front

The act or process of separating a solid from a liquid.

Back

Filtration

Front

The relative degree of downward movement of water in a soil. Also called permeability.

Back

Internal Drainage

Front

Refers to the extent of voids or openings in the soil that exist between soil particles and soil peds or clods.

Back

Porosity

Front

Unweathered hard rock that lies directly beneath the soil layers.

Back

Bedrock

Front

Soil that consists of less than 52 percent sand, 28 to 50 percent silt, and 7 to 27 percent clay, resulting in a soil texture ideal for gardening.

Back

Loam

Front

The horizon of weathered rock from which sediments were derived to form later rocks.

Back

Parent Material

Front

A thin mixture of water and any fine insoluble materials such as clay.

Back

Slurry

Front

A layer of soil, approximately parallel to the surface, having distinct characteristics produced by soil-forming processes.

Back

Horizon

Front

The mineral and organic surface of the earth capable of supporting upland plants.

Back

Soil