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| is the process that breaks down rock and other substances at earths surface. |
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| is the movement of rock particles by wind, water, ice, or gravity. |
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| in which the rock is physically broken down into smaller peices. |
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| the grinding away if a rock by rock particles carried by water, ice, wind, or gravity. |
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| wedges of ice in rocks widen and deepen cracks. |
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| is the process that breaks down rocks through chemical changes. |
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| mean that a material is full of tiny, connected air spaces that allow water to seep through it. |
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| is the loose weathered materialson earths surface in which plants can grow |
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| is the solid layer of rock beneath the soil. |
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| is a dark colored substance that froms as plant and animals decay. |
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| soil that is made up of about every type of clay, sand, slit. |
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| is a layer of soil that differs in color and texture from the layers above or below it. |
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| a crumby dark brown soil that is a mixture of humus, clay and other minerals. |
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| usally consist of clay and other particles washed down but little humus |
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| as plants shed leaves they form a loose layer called litter |
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| are the organisms that break the remains of dead organisms into smaller peices and digest them with chemicals |
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| the thick mass of tough roots at the surface of the soil keeps soil in place and held onto moisture |
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| is one that is naturallyreplacedin a relativley short time |
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| is the managment of soil to prevent its desruction |
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| os the practice of plowing feilds along curves of a slope |
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| disturbes the soil and its plant covers as little as possile |
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| was an area where wind erosion caused severe loss of topsoil in the 1930s |
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| factors that cause mechanical weathering |
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Definition
| wind, water, ice, gravity |
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| three causes of chemical weathering are |
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Definition
| water, oxegen, carbon dioxide, living organisms, and acid rain |
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| the factors that affect the rate of weathering are |
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Definition
| at which weathering occurs are type of rock and climate. |
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| chemical weathering occurs faster in hot wet climates than in cool, dry place cause |
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Definition
| beacuse in hot wet climates, granite weathers faster and evtually crumbles apart |
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