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rocks weathering
| Term | Definition |
|---|---|
| uniformitarianism | the geological principle that the same processes that operate today operated in the past to change earth's surface |
| erosion | the processes of wearing down and carrying away rocks |
| weathering | is the processes that breaks down rocks and other substaince |
| mechanical weathering | a type of weathering where rock is physically broken |
| chemical weathering | is the processes that breaks down rock through chemical changes |
| abrasion | wearing away rock by particles carried by water ice wind or gravity |
| frost wedging | water freezes in rocks and expands then forces rocks apart |
| oxidation | iron combines with oxygen in the presence of water causing rust |
| permeable | a material that is full of tiny connected air spaces that allows water to seep through it |
| soil | the loose weathered material on earth surface in which plants grow |
| bedrock | rock that makes up earths crust also the solid rock layer beneath the soil |
| humus | dark colored organic material in soil |
| fertility | a measure on how well soil supports the plant growth |
| loam | rich fertile soil that is made up of about equal parts of clay sand and silt |
| ph scale | a range of values used to indicate how acidic or basic substances |
| soil horizon | a layer o soil that differs in color and texture from the layers above or below it |
| top soil | the crumbly topmost layer of soil made up of clay and other minerals and humans |
| sub soil | the layer of soil below topsoil that has less plant and animal matter than topsoil |
| decomposer | an organism that gets energy by breaking down waste and dead organisms and return raw matrials to the soil and water |
| natural resource | is anything in the environment that humans use |
| soil conservation | is the management of soil to limit its destruction |
| contour plowing | farmers plow their fields along the curves of a slope instead in straight lines |
| crop rotation | a farmer plants different crop each year |
| conservation plowing | dead wheat and stalks of the previous year |
Created by:
jmg11941
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