APES Unit 2: Chapter 3: Soil
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19 terms
Terms | Definitions |
|---|---|
Weathering | The breaking down of materials such as rocks through contact with the earth's biosphere |
Surface Litter Layer | Part of the "Organic" Horizon, covered with organic matter in various stages of decomposition |
Parent Material | Geological matter usually in the form of bedrock that forms the soil horizons |
Clay | A combination of various minerals/metal oxides/organic matter with water molecules trapped inside |
Soil Profile | The various layers of soil |
Soil inflitration | Process by which water on the ground surface enters the soil |
Soil permeability | Ability of water to flow through soil |
Loam | Soil composed of various amounts of silt, clay, and sand |
Cation | Positively charged electron |
Micronutrients | Nutrients needed by living organisms to perform living functions, also known as Trace Elements |
Soil | A diverse group of mineral constituents that differ from their parent material |
Silt | Clay like material that is usually the suspended material in a body of water |
Gravel | Unconsolidated rock fragments that vary in size |
Soil Horizon | Distinct horizontal layers of soil |
Humus | Organic material that cannot decomposed any further |
Leaching | Loss of Organic solutes or minerals due to percolation of liquids (mainly water) |
Anion | Negatively charged Ion |
Soil Porosity | Measure of the amount of spaces in soil |
Macronutrients | Provide bulk energy, main three are protein, fat, and carbohydrates |
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