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Definition
| the process that breaks down rock and other sudstances at Earth's surface |
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| the movement of rock particles by wind, water, ice, or gravity |
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| mechanical weathering or physical weathering |
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| the type of weathering in which rock is physically broken 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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| the process that splits rock when water seeps into cracks, then freezes and expands |
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| 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 through it |
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| loose, weathered material on Earth's surface in which plants grow |
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| the solid layer of rock beneath the soil |
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| dark-colored organic material in the soil |
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| soil that is made up of about equal parts of clay, sand, and silt |
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| a layer of soil that differs in color and texture from the layers above or below it |
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| a crumy, dark brown soil that is a mixture of humus, clay, and other materials |
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| 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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| the organisms that break down 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 |
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| A resource that is naturally replaced in a relatively short time |
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| was an area where wind erosion caused severe loss of topsoil during the 1930s |
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| the management of soil to prevent ots destruction |
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| 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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