Term
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Definition
| the process that breaks down rock and other substances at Earth's surface |
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Term
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Definition
| the movement of rock particles by wind, water, ice, or gravity |
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Term
| Mechanical weathering (physical) |
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Definition
| the type of weathering in which rock is phyisically broken into smaller pieces |
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Definition
| refers to the grinding away of rock particles carried by water, ice, wind, or gravity |
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Definition
| the process that splits rock when water seeps into cracks, then frezzes and expands |
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Definition
| the process that breaks down rock through chemical changes |
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Definition
| a mineral 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 grow |
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Definition
| the solid layer of rock beneath the soil |
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Definition
| a dark-colored substance that forms as plant and animal remains have |
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Definition
| soil that is made up of equal parts of clay, sand, and silt |
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Definition
| a layer of soil that differs in color and texture from the layers above or below |
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Definition
| a crumbly, dark brown soil that is a mixture of humus, clay and other minerals |
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Definition
| consists of clay and other particles washed 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
| the organisms that break the remains of dead organisms into smaller pieces and digest them with chemicals |
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Definition
| the thick mass of tough roots at the surface of the soil |
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Definition
| naturally replaced in a relatively |
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Definition
| an area where wind erosion caused severe loss of topsoil during the 1930s |
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Term
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Definition
| the management of soil to prevent its destruction |
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Term
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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 plantcover as little as possible |
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Term
| What factors cause mechanical weathering? |
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Definition
| By 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
| Water, oxygen, carbon dioxide |
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Term
| What factors affect the rate of weathering? |
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Definition
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