Earth science

Earth science

Any of several geological sciences that are concerned with the earth, its origins, and all of its various structures and physical forms and phenomena.

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Earth science > Soil science

permanent wilting point

Earth science; Soil science

The largest water content of a soil at which indicator plants, growing in that soil, wilt and fail to recover when placed in a humid chamber. Often estimated by the water content ...

polymerize

Earth science; Soil science

To combine two or more molecules of a compound to form a more complex compound with a higher molecular weight.

exchangeable cation percentage (ECP)

Earth science; Soil science

The extent to which the adsorption complex of a soil is occupied by a particular cation. It is expressed as: ECP = ((exchangeable cation (cm kg-1 soil))/(cation exchange ...

surface tension

Earth science; Soil science

The amount of energy required to create a new water surface.

tensile strength

Earth science; Soil science

The load per unit area at which an unconfined cylindrical specimen will fail in a simple tension test.

aquods

Earth science; Soil science

Spodosols that are saturated with water for periods long enough to limit their use for most crops other than pasture or woodland unless they are artificially drained. Aquods may ...