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The soil composition in people’s backyards containsminute particles of magnetic material called rare-earth metals.Larger quantities of rare-earth metals lie in deep underground.The particles belong to a class of magnetic called ferrites that are formed in igneous (made by heat) rocks.Presence of particles in a soil compositionsuggests larger deposits of that metal nearby. In this project, the independent variable is the location of the soil sample, and the dependent variable is the resultant metallic material drawn from the soil.The constants include the magnet, the jar, the water and other conditions.How many metallic particles are in your local soil?
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Fecha publicaci?n: 12.5.2016
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