Term
|
Definition
| process that breaks down rock and other substances at Earth's surfaces |
|
|
Term
|
Definition
| movement of rock particles by wind, water, ice, gravity |
|
|
Term
| mechanical (physical) weathering |
|
Definition
| type of weathering in which rock is physically broken into smaller pieces |
|
|
Term
|
Definition
| grinding away of rock by rock particles carried by water, ice, wind, or gavity |
|
|
Term
|
Definition
| wedges of ice in rocks widen and deepen cracks |
|
|
Term
|
Definition
| breaks down rock through chemical changes |
|
|
Term
|
Definition
| a material is full of tiny, connected air spaces that allow water to seep through it |
|
|
Term
|
Definition
| loose, weathered material on Earth's surface in which plants can grow |
|
|
Term
|
Definition
| (decayed organic material in soil) a dark-colored substance that forms as plant and animal remains decay |
|
|
Term
|
Definition
| soil that is made up of about equal parts of clay, sand, and silt |
|
|
Term
|
Definition
| a layer of soil that differs in color and texture from the layers above or below |
|
|
Term
|
Definition
| crumbly, dark brown siols that is a mixture of humus, clay, and other minerals |
|
|
Term
|
Definition
| usually consist of clay and other particules washed down from the A horizon, but little humus |
|
|
Term
|
Definition
| when plants shed leaves, they form a loose layer |
|
|
Term
|
Definition
| the organisms that break the remains of dead organisms into smaller pieces and digest them with chemicals |
|
|
Term
|
Definition
| the tick mass of tough roots at the surface of the soil-kept the siol in place and held onto moisture |
|
|
Term
|
Definition
| naturally replaced in a relatively short time |
|
|
Term
|
Definition
| an area where wind erosion caused severe loss of topsoil during the 1930 |
|
|
Term
|
Definition
| the management of soil to prevent its destruction |
|
|
Term
|
Definition
| practice of plowing fields along the curves of a slope |
|
|
Term
|
Definition
| disturbs the soil and its plant cover as little as possible |
|
|
Term
|
Definition
| solid layer of rock beneath the soil |
|
|
