ARTS WORK LESSON 2 Clay


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Clay is a natural material. It is found all over the world on river and lake banks and, in fact, anywhere that the ancient action of wind, water, ice and the movement of earth's surface have crushed rock and mixed it with silica and alumina along with a variety of minerals and organic materials. Long ago people found that soft damp clay could be shaped by hand into a variety of useful forms that became permanent when placed in a fire for a period of time. This process of turning clay into a permanent ceramic object is called firing. Clays found in different locations may have very different characteristics. They may be different colors, have more or less sand or other gritty material in them, which makes them smoother or rougher textured and can affect the temperature at which they fire. Some clays are sticky and some barely hold together as they are shaped.



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