| Term | Definition |
|---|
| physical | _____ weathering 1) Unloading 2) Crystal growth 3) Insolation 4) Moisture swelling 5) Abrasion by wind, water, ice |
| chemical | _____ weathering 1) Solution 2) Oxidation-reduction 3) Hydrolysis 4) Hydration 5) Carbonation |
| biological | _____ weathering 1) Breaking up of particles 2) Transfer and mixing of materials 3) Chemcial effects 4) Complex chemical reactions 5) Shading |
| rate | factors that affect the ____ of weathering 1) Porosity and permeability 2) Cementing agent and chemical composition 3) Abrasion pH 4) Fracture pattern and density |
| volume | physical weathering processes are dominated by ______ changes |
| biological | ______ weathering is a combination of physical and chemical processes involving plants and organisms |
| weathering | the general process of rock and mineral disintegration |
| unloading | type of physical weathering - through melting of the ice, rocks there were compressed are now relieved |
| crystal | type of physical weathering - during _____ growth, volume expansion leads to physical breakup of surrounding materials |
| insolation | type of physical weathering - temperature can change the expansion/contraction of rocks |
| moisture | type of physical weathering - increased _______ swelling can lead to more clay materials |
| abrasion | type of physical weathering - _____ by wind, water and ice , particles are picked up by wind and thrown onto surface of other rocks |
| solution | type of chemical weathering - different elements have different solubility in water |
| oxidation | type of chemical weathering - _____ - reduction - reaction of materials with O to form oxides, reduction to gain electrons |
| hydrolysis | type of chemical weathering - chemical reaction between minerals and water |
| hydration | type of chemical weathering - rigid attachment where water becomes an integral part of the mineral structure |
| carbonation | type of chemical weathering - CO2 reacts with water to form a weak carbonic acid - initiates a solution of minerals |
| breaking | type of biological weathering - _______ up of particles - soil-dwelling organisms and plant roots break up / loosen up the soil |
| transfer | type of biological weathering - ______ and mixing - earthworms and termites prolifically move soil materials, bringing soil parent materials back to soil surface - rejuvenating the soils |
| chemical | type of biological weathering - _____ effects - CO2 produced by organisms initiates/promotes chemical weathering |
| chemical | type of biological weathering - complex _____ effects - organisms make organo-mineral complexes, which helps nutrient uptake and soil toxicity |
| shading | type of biological weathering - plants shade the soil, to control soil surface temperature, moderating diurnal temperature fluctuations - both physical/chemical process |
| earthworm | _______ - moves up to 50 tons of soil per hectare per year, responsible for incorporating organic matter into the soil |
| termite | ______ - bring soil parent materials back to the soil surface, thus rejuvenating the soils |
| plant | _____ - 1) Forms organo-mineral complexes 2) Moderates soil temperature fluctuations 3) Roots breakup particles |
Combine with other sets
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