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Term

loam
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SOIL

TermDefinition
loam the most fertile type of soil
humus decaying parts of plant animals in the soil
clay smallest soil particle
sand largest soil particle
sand particles from 2 to .05 millimeters
silt particles from .05 to .002 millimeters
clay particles smaller than .002 millimeters
clay the type of soil that holds most water
sand type of soil that holds less water
technology the practical use of science
agriculture the science to produce food, shelter and fiber
applied and basic the two types of agriculture
pH potential hydrogen
pH measures acidity or alkalinity
0 to 14 range of the pH scale
0 to less than 7 range of the pH for an acid
more than 7 to 14 range of the pH for a base or alkaline
pH 7 neutral
soil profile the different layers of soil in an area
Horizon one of the layers of a soil profile
Horizon-O top layer of a soil profile
Horizon-A second layer of a soil profile
Topsoil another name for Horizon-A
subsoil another name for Horizon -B
Horizon-B second layer of soil profile
Horizon-R the layer known as bedrock
parent material material from which soil is made
weathering the process of changing rocks to soil
fauna the animals indigenous to an area
flora the plants indigenous to an area
cohesion a force that attracts molecules of the same type
adhesion a force that attracts different types of molecules
tilth the general condition of the soil with respect to texture, moisture and drainage
texture the property caused by the amount of sand, silt and clay in the soil
Created by: CAHS SCIENCE 09
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