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Terms in this set (17)
Mechanical or chemical surface processes that break rock into smaller and smaller pieces
Physical processes that break rock apart without changing its chemical makeup; can be caused by ice wedging, animals, and plant roots.
Mechanical weathering process that occurs when water freezes in the cracks of rocks and expands, causes the rock to break apart.
Occurs when chemical reactions dissolve the minerals in rocks or change them into different minerals.
Occurs when some materials are exposed to oxygen in the air.
Average weathering pattern in an area over a long period of time; can be classified by temperature, humidity, precipitation, and vegetation.
A mixture of weathered rock and mineral fragments, decayed organic material , mineral fragments, water and air that can take thousands of years to develop
Dark-colored, decayed organic matter that supplies nutrients to plants and is found mainly in topsoil
Each layer in soil profile-horizon A (top layer of soil), horizon B (middle layer), and horizon C (bottom layer).
A type of erosion caused by runoff that occurs when water flowing as sheets picks up sediments and carries them away
Any type of erosion that occurs as gravity moves materials down-slope
Process in which surface materials are worn away and transported from one place to another by agents such as gravity, water, wind, and glaciers
No Till Farming
Method of reducing soil erosion; plant stalks are left in the field after harvesting and the next year's crop is planted within the stalks without plowing.
Planting along the natural contours of equal elevation
A farming method used to reduce erosion on steep slopes.
Removal of minerals that have been dissolved in water.
Vertical section of soil layers, each of which is a horizon
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