Explain about expansion of material?
The material can be defined as a substance from that various things are formed. Like plastic, aluminum and iron are kinds of materials that are widely used for manufacturing purposes.
Answer and Explanation:
The expansion of material can be defined as a situation under which the actual dimension of material for any object changes, the expansion of material held due to various reasons like an increase in temperature. When the atmospheric temperature increases, the surface temperature of material started increasing, this change in temperature cause expansion in the material.
For example: In the summer season, due to a change in temperature, expansion is held in the material of rails.
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from General Studies Science: Help & ReviewChapter 16 / Lesson 3