Weathering and Soil
Terms
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- chemical weathering
- break down of rocks by a chemical reaction
- mechanical weathering
- physical process that breaks down a rock
- erosion
- transport of sediments
- leaching
- process where water carries nutrients out of soil
- horizon
- a layer of soil
- gulley
- deep and wide channel caused by running water erosion
- rill
- narrow channel caused by running water erosion
- deposition
- laying down of sediments
- frost wedging
- repeated freezing and thawing of water that breaks down rocks
- exfoliation
- removing the outer layers of a rock
- hydrolysis
- dissolving of minerals by water
- topsoil
- horizon A, mixture of humus and weathered rock
- climate
- temperature and precipitation that an area recieves
- oxidation
- rusting
- soil fertility
- ability of soil to support plant growth
- humus
- organic material in soil
- subsoil
- horizon B; rich in clay
- parent material
- bedrock which soil is made from
- soil
- mixture of weathered rock and decaying organic matter
- transported soil
- soil that has been moved from another place