Term
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Definition
| wearing away of rock material by grinding action |
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Definition
| Rainwater that contains a high level of acid that were caused by polutants |
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Definition
| breakdown or decomposition of rock that takes place when minerals are changed into different substances |
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Definition
| slow movement of soil down a slope |
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Term
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Definition
| downslope movement of a mass of earth materials that have been saturated with water |
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Definition
| removal and transport of materials by natural agents such as wind and running water |
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Definition
| peeling of surface layers from exposed bedrock |
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Term
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Definition
| mechanical weathering process in which water freezes in the cracks of rock and wedges it apart |
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Term
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Definition
| chemical reaction of water with other substances |
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Term
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Definition
| rapid movement of a mass of bedrock or loose soil and rock down the slope of a hill, mountain or cliff |
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Term
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Definition
| downslope transportation of large masses of earth materials by gravity |
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Term
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Definition
| breakdown of rock that takes place when a rock is broken into smaller peices of the same material without changing its composition |
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Term
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Definition
| downslope movement of water that contains large amounts of suspended clay and silt |
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Term
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Definition
| chemical reaction of oxygen with other substances |
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Term
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Definition
| rock material from which a soil is formed |
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Term
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Definition
| soil whose parent material is the local bedrock beneath it |
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Definition
| soil condition cause by the evaporation of irrigation water, which leaves too much mineral matter on the soil's surface for crops to grow |
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Term
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Definition
| mass movement in which a block of land tilts and moves downhill along a surface that curves into the slope |
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Definition
| loose, weathered rock and organic material in which plants with roots can grow |
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Term
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Definition
| process by which soil gradually becomes so lacking or depleted in nutrients that it can no longer grow a crop |
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Term
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Definition
| ablility of soil to grow plants |
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Term
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Definition
| a soil layer with physical and chemical properties that differ from those of adjacent soil layers |
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Term
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Definition
| a cross section of soil layers that displays all soil horizons |
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Term
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Definition
| the B-horizon of soil; contains clay and iron oxides washed from the topsoil |
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Term
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Definition
| cliff rock fragments that have been weathered loose and pulled down by gravity |
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Term
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Definition
| the A-horizon of soil; contains organic material that forms from decayed plant and animal material |
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Term
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Definition
| soil that formed from parent material left by winds, rivers, or glaciers or soil that itself was moved from its original location |
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Term
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Definition
| solidified lava filling the central vent of an extint volcano |
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Term
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Definition
| the breakup of rock due to exposure to processes that occur at or near Earth's surface |
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