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Geology For Kids , The Study of Our Earth
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Inorganic Materials In Soil

The inorganic materials found in soils account for about half of the total mass of most soil. These inorganic materials take the form of sand, silt and clay, and are referred to commonly as dirt.

Dirt In Soil





They form as rocks are eroded by the forces of weather, both wind and rain.

Much of the sand and silt is small but visible grains of rock. However, some of it can become so fine that it is microscopic, especially when it comes to clay.

Clay is an extremely important part of soil. Because of its porous nature, water is able to seep through clay with ease. Most clays have a negative charge which attract positively charged particles suspended or dissolved in water. As a result, many important chemical reactions take place in clay.

 


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