Term
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Definition
| -the process that breaks down rock and other substances at Earth's surface- |
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Term
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Definition
| -the movement of rock particles by wind, water, ice, or gravity- |
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Term
Mechanical Weathering
-Physical- |
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Definition
| -the type of weathering in which rock is phisically broken down into smaller pieces- |
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Term
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Definition
| -refers to the gringing away of rock by rock particles carried by water, ice, wind, or gravity- |
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Term
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Definition
| -wedges of ice in rocks widen and deepen cracks- |
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Term
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Definition
| -the process that breaks down rock through chemical changes- |
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Term
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Definition
-means that a material is full of tiny
connected air spaces that allow water to seep through- |
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Term
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Definition
| -the loose, weathered material on Earth's surface in which plants can grow- |
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Term
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Definition
| -the solid layer of rock beneath the soil- |
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Term
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Definition
| -a dark-colored substance that forms as plant and animal remains decay- |
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Term
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Definition
| - a layer of soil that differs in color and texture from the layers above or below it- |
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Term
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Definition
| -a crumbly, dark brown soil that is a mixture of humus, clay, and other minerals. This makes up the A horizon.- |
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Term
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Definition
| -the material that makes up the B horizon that usually consists of clay and other particles washed down from the A horizon, but little humus- |
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Term
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Definition
| -the loose layer formed as plants shed leaves- |
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Term
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Definition
| -the organisms that break the remains of dead organisms into smaller pieces and digest them with chemicals- |
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Term
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Definition
| -the thick mass of tough roots at the surface fo the topsoil- |
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Term
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Definition
| -one that is naturally replaced in a relatively short time- |
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Term
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Definition
| -was an area where wind erosion caused severe loss of topsoil during the 1930's- |
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Term
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Definition
| -the management of soil to prevent its destruction- |
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Term
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Definition
| -rich, fertile soil that is made up of equal parts of clay, sand, and silt- |
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Term
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Definition
| -the practice of plowing fields along the curves of a slope- |
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Term
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Definition
| -disturbs the soil and its plant cover as little as possible- |
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