Soil Science Terms
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
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| Aggregates | The structures formed when soil particles combine with each other
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| Alluvial Soil | Soil particles moved about by water and washed into low-lying areas to form deltas and flood plains
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| Capillary Water | Water held between the soil particles against the force of gravity
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| Clay | The smallest size soil particle; has the ability to hold both nutrients and water in the soil
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| Decomposition | The process in which organic matter is broken down
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| Glacial Soil | Soil created, moved, and deposited by glaciers
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| Gravitational Soil | Water pulled downward in soil by the force of gravity
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| Horizon | A distinct layer of soil in a profile
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| Humus | Plant material or organic matter that reaches the advanced stage of decomposition
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| Hygroscopic Water | Water that forms a thin film around individual soil particles; not available to plants
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| Infiltration | The process of water soaking into the soil
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| Organic Matter | The accumulation of decayed soil or partially decayed plants, animals, and other organisms in the soil
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| Leaching | The process of soil water dissolving minerals, chemicals, and salts
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| Peds | Clusters of soil particles
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| Loess | Soil particles carried and deposited by the wind
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| Mineral Matter | Inorganic material in the soil; formed by weathering of rocks
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| Silt | The mid-size soil particle; has good water holding capacity
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| Permeable | The quality of soil that allows water to infiltrate and percolate
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| Pore Spaces | Spaces between solid particles in the soil that are filled with air or water
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| Percolation | The downward movement of water in the soil
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| Sand | The largest soil particle; helps to improve aeration in the soil
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| Soil Profile | A view of a cross section of soil
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| Soil Structure | The way in which aggregates or clusters are arranged
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| Soil Texture | The proportions of sand, silt, and clay in the soil
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| Subsoil | The B horizon in a soil profile; the layer below the topsoil
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| Tilth | The ease at which soil can be worked to form a good seedbed
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| Topsoil | The top few inches of soil with the greatest fertility
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| Weathering | The process in which the climate literally causes rock to break into small particles forming mineral matter
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Created by:
jbond-ledford
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