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Definition
| the process that breaks down rock and other substances at earths surface |
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Definition
| the movement of rock particles by wind, water, ice, or gravity |
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| the type of weathering in which rock is phisicallt broken down into smaller pieces |
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| the grinding away of rock by rock particles carried by water, ice, wind, or gravity |
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Definition
| when wedges of ice in rocks widen and deepen cracks |
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| the process that breaks down rock through chemical changes. |
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| a material is full of tiny, connected air spaces that allow water to seep through it. |
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| the loose, weathered material on earth's surface in which plants can grow. |
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| the solid layer of rok beneath the soil. |
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| a dark colored substance that forms as plant and animal remains decay. |
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| soil that is made of about equal parts of clay, sand, and silt. |
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| a layer of soil that differs in color and texture ffrom the layers above or below it. |
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| a crumbly, dark brown soil that is a mixture of humus, clay,nd other minerals |
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Definition
| usually consits of lay and other particals washe down from the a horizon, little humus. |
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| the organisms that break the remains of dead organisms into smaller peices and digest them with chemicals. |
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| the thick mass of tough roots at the surface of the soil. |
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Definition
| one that is naturally replaced in a relatively short time. |
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| an area where wind erosion caused severe loss of topsiol during the 1930's. |
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Definition
| the management of soil to prevent its destruction. |
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Definition
| the practice of plowing fields along the curves of a slope. |
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Definition
| disturbs the soil and its plant cover as little as possible. |
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| what factors cause machanical weathering? |
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Definition
| freezing and thawing, release of pressure, growth of plants, and actions of animals. |
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| describe three causes of chemical weathering. |
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Definition
| three causes of chemical weathring are water, oxygen, and carbon dioxide. |
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