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Definition
| procces that breaks down rock and other substances at Earth's surface |
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Definition
| movement of rock particles by wind, water,ice,or gravity. |
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Term
| mechanical or physical weathering |
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Definition
| the type of weathering in wich rock is physicaly broken into smaller peices. |
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Definition
| grinding away of rock by rock particles carried by,ice,water,wind,or gravity. |
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Definition
| wedges of ice in rocks widen and deepen cracks. |
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| the procces thats breaks down rock through chemical changes. |
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| a material that is full of tiny, connected air spaces that allow water to seep through it. |
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Definition
| the loose weathered material on Earth's surface which plants can grow. |
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Definition
| solid layer of rock beneath the soil. |
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Definition
| dark colored substance that forms as plants and animals remains decay. |
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Definition
| layer of soil that differs in color and texture from the layers above it or below it. |
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Definition
| crumbly dark brown, siol that is a mixture of humus, clay,and other materials. |
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Definition
| usually consist of of clay and other particles washed down from the Horizon A and a little humus. |
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Definition
| as plants shed leaves,they form a loose layer. |
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Definition
| the organisms that break down the old remains of dead organisms itno smaller pieces and digest them with chemicals. |
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Definition
| the thick mass of tough roots at the surface of the soil. |
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Definition
| managment of soil to prevent its destruction. |
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Definition
| practice of plowing fields along the curves of a slope. |
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Definition
| disturbs the soil and its plant covering its destruction. |
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Definition
| one that is naturally replaced in a relitivly short time. |
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Definition
| rich soil that is made up of equal parts of clay,sand,and silt. |
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Term
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Definition
| wind erosion caused by severe loss of topsoil during the 1930's |
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