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Definition
| the process that breaks down rocks and other substances at Earth surface. |
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| the movement of rock particles by wind, water, ice, or gravity. |
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| mechanical weathering(physical) |
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Definition
| The type of weathering in which rock is physically broken into smaller pieces. |
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| The term abrasion refers to the grinding away of rock by water, ice, wind, or gravity. |
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Definition
| wedges of ice in rock widen and deepen cracks. |
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| the process of that breaks down rocks through chemical changes. |
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| permeable mean a material full of tiny, connected air spaces that allow water to seep though it. |
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Definition
| the loose, weathered material on Earths surface in which plants can grow. |
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Definition
| the solid layer of rock beneth the soil. |
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Definition
| a dark colored substance that form when plants and animals remain decay. |
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| soil that is made up about equal parts of clay, sand, and silt. |
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| a layer of soil that differs in coler and layers from above it or below it. |
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| a crumbly, dark brown soil that that is a mixtures of humus, clay and other minerals. |
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Definition
| usually consist of clay and other particals washed down from the A horizen, but 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 the remains or dead organism into smaller pieces and digest them with chimicals. |
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Definition
| the thick mass of tough at the surface of the soil-kept the soil in place and held onto moister. |
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Definition
| one that is naturally replaced in a realativly short time. |
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Definition
| an area where wind erosion caused sever loss topsoil during the 1930s. |
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Definition
| the manengment of soil to prevent destruction. |
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Definition
| the practice of plowing feilds along the curves of the slopes. |
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Term
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Definition
| disturbs the soil and its plants cover as little as possible. |
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