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Soil Vocabulary Crossword

Across
A layer of soil with properties that differ from the layers above or below it.
The relative proportion of particles that make up a soil. Sand particles are the largest and clay particles the smallest.
Soil material that contains up to 28% clay. It also contains 50 to 90% silt and up to 55% sand.
At the point where the speed of a stream slows sediment is deposited. Over time the stream channel carves a smaller path through the sediment. This creates terraces on both sides.
The study of the physical earth and its composition (materials) as well as history and processes (physical and chemical) that act on it.
Soil material that contains 27 to 41% clay. It also contains 28 to 50% silt and 28 to 52% sand.
The horizon that formed at the land surface. Mostly weathered minerals from parent material with a little organic matter added.
The shape of the land surface.
Soil material that contains 7 to 27% clay. It also contains 17 to 55% silt and 25 to 53% sand.
Material derived from the decay of plants and animals. Always contains compounds of carbon and hydrogen.
Down
Coatings of oriented clay on the surfaces of peds and mineral grains and lining pores.
This person studies the upper few meters of the Earth’s crust in terms of its physical and chemical properties.
A soil particle between 0.05 and 2.0 mm in diameter.
Represents areas with similar biotic and abiotic characteristics which determine the resource potential and likely responses to natural and man-made disturbances. Characteristics such as climate and topography define this.
The top layer of ground water where the soil is filled with standing water. It can move up or down during different seasons.
A body of rock of considerable extent with distinctive characteristics that allow geologists to map and describe it.
The soil horizon rich in minerals that leached down from the horizons above it. Not present in all soils.
The sequence of natural layers in a soil. It extends from the surface downward to unconsolidated material. Most soils have three major horizons.
A soil particle that is less than 0.002 mm in diameter. This type of soil has more than 40% clay. It has less than 45% sand and less than 40% silt.
A natural subsurface horizon with very low organic matter and high bulk density or high mechanical strength relative to overlying and underlying horizons; has hard or very hard consistence (seemingly cemented) when dry but shows a moderate to weak brittleness when moist.
A soil particle between 0.002 and 0.05 mm diameter. It is also used to describe a soil textural class.