What is thermal expansion .

Question

Accepted Answer

Thermal expansion is the tendency of matter to change in shape, area, and volume in response to a change in temperature.

Thermal expansion occurs when a material expands or contracts due to a change in temperature.
Most materials expand when heated and contract when cooled.
This phenomenon is utilized in various applications such as in the design of bridges, railways, and pipelines to account for temperature changes.
Common examples include the expansion joints in bridges and the gaps between railway tracks to prevent buckling.
Thermal expansion is also a key consideration in the design of engines, turbines, and other mechanical systems.

Accepted Answer

The tendency of matter to change in shape, area and volume in response to change in temperature

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