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Definition
| is the process that breaks down rock and other substances at Earth's surface |
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Definition
| is the moving of rock particles by wind, water, ice, or gravity. |
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| mechanical (physical) weathering |
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Definition
| rock is physically broken into smaller pieces. |
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Definition
| the grinding away of rock by rock particles carried by water, ice, wind, or gravity. |
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Definition
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| the process that breaks down rock through chemical changes |
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Definition
| a material 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 in which plants can grow. |
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| the solid layer of rock beneath the soil |
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Definition
| is a dark-clolored substance that forms as plant and animal remains decay. |
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Definition
| soil that is made up of about equal parts of clay, sand, and silt. |
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| soil that differs in color and texter from the layers above or below it. |
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| a crumbly, dark brown soil that is a mixture of humus, clay and other materials |
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Definition
| it consists of clay and other particles waswhed down from the A horizon, but little humus. |
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Definition
| as plants shed leaves, they form a loose layer. |
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Definition
| 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
| it is naturally replaced in a relatively short time. |
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Definition
| an area where wind erosion caused severe loss of topsoil in the 1930's. |
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Term
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Definition
| the managment of soil to prevent its destruction. |
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Term
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Definition
| the practice of plowing feilds along the curves of a slope. |
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Term
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Definition
| it disturbes the soil and its plant cover as little as possible. |
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