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science ch. 8
ch.8 science vocab words
Question | Answer |
---|---|
The cross section of earth exposed by the digging | soil profile |
loose, weathered rock and organic material in which plants with roots can grow | soil |
The material form which a soil is formed | parent material |
Soil that has bedrock as its parent material | residual soil |
Soil that formed from parent material left by winds, rivers,or glaciers, or soil that its self was moved from its original location | transported soil |
The A-horizon of soil | topsoil |
The B-horizon of soil that contains clay and iron oxides washed from topsoil | subsoil |
any chemical reaction of water with other substances | hydrolysis |
The chemical reaction of oxygen with other substances | oxidation |
A weak acid formed when crbon dioxide dissolves in water | carbonic acid |
Mechanical weathering proccess in which water freezing in cracks of rocks wedges rocks apart | ice wedging |
Peeling of surface layers from exposed bedrock | exfoliation |
The process in which rocks are broken up by the actionof water, the atmosphere, and organsims | weathering |
Process by which earth materials are moved by natural agents like moving water, wind, and ice | erosion |
Disintegration that takes place when rock is broken into smaller pieces without changing its chemical compostion | mechanical weathering |
Brekdown or decomposition of rock that takes place when minerals are changed into different substances | chemical weathering |
Slow, often invisible, movement of soil down a slope | creep |
A sudden movement of a mass of bedrock or loose rock down the slope of a hill, a mountain, or a cliff. | landslide |
The downslope movement of large masses of earth materials due to the pull of gravity | mass movement |