Term
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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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Term
| Mechanical/Physical Weathering |
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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 by rock particles carried by water,ice,wind,or gravity. |
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Definition
| the process where wedges of ice in rocks widen and deepen cracks. |
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Definition
| the process that breaks down rock through chemical changes. |
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Definition
| when a material 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 can grow. |
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Definition
| The solid layer of rock beneath the soil. |
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Term
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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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Term
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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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Term
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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 loose layer of dead plant leaves and stems on the surface of the soil. |
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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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Term
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Definition
| The thick mass of tough roots at the surface of the soil. |
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Term
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Definition
| A resource that is naturally replaced in a relatively short time. |
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Term
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Definition
| Was an area where wind erosion caused severe loss of topsiol suring the 1930's |
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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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Term
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Definition
| disturbs the soil and its plant cover as little as possible. |
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Term
| release of pressure, freezing and thawing, plant growth, abrasion, and animal actions. |
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Definition
| Factors that cause mechanical weathering. |
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Term
| Water,oxygen, and acid rain. |
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Definition
| Three causes of chemical weathering. |
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Term
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Definition
| Factors that affect the rate of weathering. |
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Term
| Why chemical weathering occurs faster in hot,wet climates than in cool,dry climates. |
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Definition
| Chemical reaction occur faster at higher temperatures. |
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Term
| Soil forms as rock is broken down by weathering. |
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Definition
| role weathering plays in the formation of soil. |
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Term
| water/air,sand/silt,clay,organic matter |
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Definition
| different materials that make up soil from largest to smallest. |
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Term
Forest-cool,wet climates,thin & little humus
Prarie-cool,dry climates,thick & rich humus |
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Definition
| How forest soils differ from prarie soils. |
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Term
| Everything that lives on land depends directly or indirectly on soil. |
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Definition
| Importance of soil as one of earth's resources. |
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Term
| Plowing removed the grass from the Great Plains and exposed the soil. In times of drought,the topsoil quickly dried out,turned to dust,and blew away. |
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Definition
| How settlers on the Great Plains helped create the Dust Bowl. |
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Term
| Contour Plowing and Conservation Plowing. |
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Definition
| Techniques that farmers use to conserve soil. |
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