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Definition
| Is the process that breaks down rock and other substances at Earth's surface. |
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| Is the movement of rock particles by wind,water,ice or gravity. |
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| The type of weathering in which rock is physically broken into smaller pieces. |
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| Refers to the grinding away of rock by rock particle carried by water,ice, wind,or gravity. |
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| Wedges of ice in rocks widen and deepen cracks. |
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| Is the process that breaks down rock through chemical changes. |
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| Means that a material is full of tiny connected air spaces that allow water to seep throught it. |
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| Is the loose weathered material on Earth's surface in which plants can grow. |
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| Is the solid layer of rock beneath the soil. |
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| Is a dark-colored substance that forms as plant and animal remains decay. |
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| Soil that is made up of about equal parts of clay sand and silt. |
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| Is a layer of soil that differs in color and texture 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 minerals. |
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| Usally consists of clay and other particles washed down from the A horizon but little humus. |
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| As plants shed leaves they form a loose layer. |
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| Are the organisms that break the remains of dead organisms into smaller pieces and digest them with chemicals. |
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| The thick mass of tough roots at the surface of the soil it keeps the soil in place and holds onto moisture. |
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Definition
| Is one that is naturally replaced in a relatively short time. |
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| Is an area where wind erosion caused severe loss of topsoil during the 1930's. |
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| Is the management of soil to prevent its destruction. |
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| Is the practice of plowing fields along the curves of a slope. |
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| Disturbs the soil and its plant cover as little as possible. |
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