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24 Cards in this Set

  • Front
  • Back

Uniformitarism

a

Erosion

a

Wearhering

a

Mechanical Weathering

a

Chemical Weathering

a

Abrasian

a

Frost Wedging

a

Oxidation

When iron combines with water.

Permeable

Material full of tiny conected air spaces that allow water to seep through.

Soil

The loose weathered material beaneth the Earth's surface in which plants can grow.

Bedrock

A solied layer of rock beneath the soil.

Humus

Decayed organic material in soil.

Fertility

A messure of how well soil supports plant growth.

Loam

Soil that is made up of equal parts of clay, sand, and silt.

pH Scale

A scale that messures soil aciddity.

Soil Horizon

A layer of soil that differs in color, texture, and composton from the layers above or below it.

Topsoil

The A horizon.

Subsoil

The B horizon.

Decomposers

Organisms that break the remains of dead organsims into smaller peices and digest them with chemicals.

Natural Resource

Anything in the enviorment that humans use.

Soil Conservation

Management of soil to limit it's destuction.

Crop Rotation

A farmer plants different crops each year.

Countour Plowing

Farmers plow their feilds along the curve of a slop instead of straight rows.

Conservation Plowing

Dead weeds and stalks from the previous years crop are plowed into the ground to help soil return nutrients, retain mostiure, and hold soil into place.