what is Thermal Expansion?
Answers
Thermal expansion is the tendency of matter to change its shape, area, and volume in response to a change in temperature.
Examples
●Cracks in the road when the road expand on heating.
●Sags in electrical power lines.
●Windows of metal framed need rubber spacers to avoid thermal expansion.
Windows of metal framed need rubber spacers to avoid thermal expansion.Expansion joints (like joint of two railway tracks).
●Length of metal bar getting longer on heating.
●Tyre bursts in hot days when filled full of air due to thermal expansion.
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Answer:
Thermal Expansion
Explanation:
Thermal expansion is the tendency of matter to change its shape, area, and volume in response to a change in temperature.Temperature is a monotonic function of the average molecular kinetic energy of a substance. When a substance is heated, the kinetic energy of its molecules increases. Thus, the molecules begin vibrating/moving more and usually maintain a greater average separation.
Read More - wikipedia on thermal expansion
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