Thermal expansion takes place due to the increase in the kinetic energy of the constituent molecules as they are heated. Thermal expansio...

Why there is Small Gap in Bridge?

Thermal expansion takes place due to the increase in the kinetic energy of the constituent molecules as they are heated. Thermal expansion is the reason we leave some gaps between sections of a bridge or two consecutive sections of railway tracks. ... In the case of bridges, this can also cause deflection of its sections.

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