Question

metal bridges
are
provided with expansion gaps ?
please give reason briefly​

Answer 1

Answer:

These gaps in the bridges are known as expansion joints. Expansion joints are basically gaps in the bridge that allow the bridge to expand and contract. Without these gaps, the bridge may fall apart.

Answer 2

According to science, a substance expands when heated and contracts when cooled. Therefore, metal bridges are provided with expansion gaps to allow the plates of the metal bridge to expand during summer, when it is hot.