Why do railway tracks have gaps in them?

Answer 1

Railway tracks have gaps to allow for expansion when the tracks heat up. As the tracks get hotter, they expand and get slightly larger. Without the gaps, the tracks would buckle from the force of the expansion. They have fishplates located between the joins to force the rails back into lateral alignment and thus prevent derailments.

In modern continuously welded rail these gaps are often cut on a diagonal to prevent this misalignment. The thermal expansion and contraction of rail track is minimal and the forces push to the outside rather than along the rail.

They are also there because segments of rail have traditionally been required to be removed and replaced easily and so had to be made a manageable length.
Heat expands metal, to prevent buckling in the rails the tracks are in pieces with gaps. Another reason is in case of lighting strike the electric current can only travel as far as the first gap, this preventing electrical charge getting to a train car or electrical box.
because the railway lines expand during the summer and by the friction of the train with it . if the gap is not kept the rail lines would expand and break. so to avoid the breaking of the rails the gap is kept
There is gaps between railways because during summer when the sun will heat the rail which is made of iron will obviously expand.

After some calculation an approximate distance is left between them.

After this answer you will ask but what in winter and how does the train pass on the gaps?

So this gap is nothing for the train. It is left so that during expansion when the railways will expand the rail will not change direction.

For e.g:-

imagine when you take 2 drinking pipe and joint them together it will change direction or even damage.
when heat is supplied to a substance or material it will expand.during summer the tracks get heated as a result it will expand. if gaps are not provided, that may result in the bending of tracks.
Railway tracks have expansion joints to prevent them from warping when they expand during very hot weather. The metal on railway tracks can conduct a lot of heat during sunny periods.
There are small gaps between the length of the railway track because when the temperature is hot the metal will expand and cause the train to crash. So if there is a gap between the length of the train tracks the metal wont join together and cause the train to crash. When the weather is hot have you ever noticed that the trains go slower? Thats just in case the metal joins together.

A.thermal conductivity

B.specific heat

C.thermal expansion

D.thermal insulation
The gaps are there to allow for the expansion (lengthening) of the rails in hot weather. Without any gaps, the rails would buckle and go out of alignment.

Answer 2

I am assuming you are talking about the spaces between the ends of the segments of the track. If there were no gaps when the tracks got warmed up (usually by the sun) then they would buckle as they expand causing the train to potentially derail.

Answer 3

The gaps between the rails were originally there because rail was carried and installed by hand. Remember this was in a time when welding on site was either not possible or later too expensive.

Later when continuous welded rail became possible, it was found that every so often you need to allow space for the rail to expand and contract due to temperature changes.

Answer 4

in the scientific view. by heat objects will enlarge.that is the reason

Answer 5

As we all know that on heating a substance makes it expand. So when the trains run on the railway tracks they produce heat and the tracks get expanded.

Answer 6

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Answer 7

free