explain different types of thermal expansion.
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Answer:
Name three types of thermal expansion?
Answer
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Hint: When solids, liquids and gases are subjected to change in temperature, there is some change in their dimensions. Thermal expansion refers to the expansion or contraction of the dimensions of the solid, liquid or gas when their temperature is changed.
Complete answer:
Let us first understand what thermal expansion is. When solids, liquids and gases are subjected to change in temperature, there is some change in their dimensions. Thermal expansion refers to the expansion or contraction of the dimensions of the solid, liquid or gas when their temperature is changed. There are three types of thermal expansion depending on the dimension that undergo change and that are linear expansion, areal expansion and volumetric volume.
(i) Linear expansion: Linear expansion is the expansion in the length of the substance which is subjected to increasing temperature. Linear expansion mostly takes place in solids.
(ii) Areal expansion: Areal expansion is the expansion of the surface area of the substance which is subjected to increasing temperature. Areal expansion is also called superficial expansion.
(iii) Volume expansion: Volumetric expansion is the expansion in the volume of the substance which is subjected to increasing temperature. For an open solid, volumetric expansion refers to the expansion of the volume enclosed by it.
Answer:
There are three ways in which we categorise thermal expansion – Linear Expansion, Superficial Expansion and Cubical Expansion. These correspond to expansion in length, area and volume of a substance.
Explanation:
Thermal expansion refers to the expansion or contraction of the dimensions of the solid, liquid or gas when their temperature is changed. There are three types of thermal expansion depending on the dimension that undergo change and that are linear expansion, areal expansion and volumetric volume.