Question

Expansion on heating can be a nuisance. Explain giving two examples.

Answer 1

Expansion due to heating can be a nuisance. This is explained below with the help of the following examples:
1. Railway tracks are made up of iron which expands during the summers. Hence, if no gap is left between two conjoined tracks, they will bend and result into serious accidents.


2. A steel bridge also expands during the summers. This is the reason why one end of a steel bridge is fixed and the other rested on rollers with enough space on its front to allow it to expand easily. If this is not done, it will only cause serious damage to the bridge.