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Definition
| The process that breaks down rock and other substances at Earth's surface. |
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Definition
| The movement of rock particles by wind, water, ice, or gravity. |
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Definition
| The type of weathering in which rock is physically broken into smaller pieces. |
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Definition
| 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 freezes and expands. |
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Definition
| The process that breaks down rock through chemical changes. |
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Definition
| Full of tiny holes, connected air spaces that allow water to seep through it. |
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| The loose, weathered materials on Earth's surface in which plants can 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 decay. |
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Definition
| Soil that is made up of about 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 it. |
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Definition
| A crumbly, dark brown soil that is a mixture of humus, clay, and other materials. |
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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
| The organisms that break the remains of dead organims 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
| One that is naturally replaced in a relatively short time. |
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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 curves of a slope. |
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Term
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Definition
| Diturbs the soil and its plant cover as little as possible. |
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Term
| What factors cause mechanical weathering? |
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Definition
| Freezing, thawing, growth of plants, and actions of animals. |
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| Describe three causes of chemical weathering. |
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Definition
| Acid rain, living organisms, and water. |
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| What factors affect the rate of weathering? |
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Definition
| Heat, cold, water, and ice. |
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Term
| Explain why chemical weathering occurs faster in hot, wet climates than in cold, dry climates. |
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Definition
| Chemical weathering has more agents than mechanical weathering. |
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