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Definition
| the process that breaks down rock and other substances 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(physical) |
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Definition
| the type of weathering in which rock is physically broken down into smaller pieces. |
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| refers to the grinding away of rock particles carried away by water ,ice,wind,or gravity. |
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| wedges of ice in rocks widen and deepen cracks. |
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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, connectedair spaces that allow water to seep through it. |
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| the loose, weathered material on Earth's surfacein which plants can grow. |
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| the solid layer of rock beneath the soil. |
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| a dark-colored subtance that forms as plant and animal remains decay. |
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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 layer.above or below it. |
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| A crumbly, 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 fromthe A horizon, but with little humus. |
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| As plants shed leaves,they form a loose layer. |
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| The organisms that break the remains of dead organisms into smaller pieces and degest them with chemicals. |
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| the thick mass of tough roots at the surface of the soil. |
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| one that is naturally replaced in a relatively short time. |
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| an area where wind erosion caused servere loss of topsoil during the 1930's. |
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| the management of soil to prevent its destruction. |
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| the practice of plowing fields along the curves of a slope. |
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Definition
| disturbs the soil and its plant cover as little as possible. |
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| factors that cause mechanical weathering |
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Definition
| release of pressure, freezing and thawing, plant growth, abrasion, and animal attacks. |
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| describe three causes of chemical weathering. |
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Definition
| water is the most important agent of chemical weathering. Water weathers rock by dissolving it.Oxygen makes your bike rust and makes it crumbly and soft. Carbon dioxide also causes chemical weathering.Carbon dioxide produces carbonic acid which easily weathers limestone and marble. |
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| What factors affect the rate of weathering? |
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Definition
| If the subtance si permeable it affects the rate of weathering |
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