| A | B |
|---|
| abrasion | rocks worn away when other rocks rub and grind against them |
| acid rain | sulfur dioxide nitrogen compounds and carbon dioxide react with water lowering its pH |
| chemical weahering | rock's minerals hanged into different substances |
| contour farming | crops planted in rows perpendicular to slope t reduce erosion |
| creep | slow imperceptible movement of soil down a slope |
| decomposition | rock's minerals hanged into different substances |
| disintegration | rock split into smaller pieces with out composition changing |
| earthflow | mass of weathered material saurated with water flows downhill |
| erosion | removal and transport of materials by natural agents (wind, water) |
| exfoliation | upward expansion of deeper rock pushes upper rock causing it to crack |
| frost wedging | water in rock cracks wedges rock apart when frozen |
| hydrolysis | chemical weather by water reacting with oter substances in rock |
| landslide | movement of a mass of bedrock or loose soil down the slope of hill/slope/mountain |
| mass movement | downward transportation of weathered material by gravity |
| mechanical weathering | rock split into smaller pieces with out composition changing |
| mudflow | rapid movement of water wih large amounts of suspended clay and silt |
| oxidation | brown red color caused when rock substances react with oxygen to form oxides |
| parent material | material from which a soil is made |
| residual soil | soild derived from the bedrock beneath the soil |
| salinization | soil gains too much mineral matter from evaporated water it can no longer grow plants |
| slump | blocks of land tilt and move down curving into the slope |
| soil | loose weathered rock and organic material in which plants can grow |
| soil depletion | soil begins to lack nutrients needed to grow plants |
| soil fertility | abililty of soil to grow plants |
| soil horizon | the three different zones seen in a soil profile |
| soil profile | cross section of earth exposed by digging to show soil layers |
| strip cropping | alternate crops tha leaves bare ground with one that completely covers ground |
| subsoil | (B horizon) red/brown layer rich in oxides washed dow from top layer |
| talus | rock fragments weatherd from a cliff and pulled down by gravity |
| topsoil | (A horizon) snad clay silt and organic matter in upper soil layer |
| transported soil | soild formed from parent material pushed/moved into a region |
| volcanic neck | hard core of igneous rock exposed when outer soil is eroded from volcano |
| weathering | break up of rock due to processess at Earth's surface |
| windbreaks | belts of trees planted around fields to slow wind/reduce wind erosion |
