Question

List any three real life applications of expansion and contraction of substances

Answer 1

Examples of expansion and contraction in daily life:-
1) Engines of motor vehicles run when gases expand.
2) When making steel rims for wheels.
3) When the screw-cap of a bottle cannot be opened.
Examples where it is necessary to allow for expansion and
contraction :-
A) When telephone wires are made, they are not pulled
together tightly because on cold days they can contract and
snap.
B) Space is left between rails on a railway line so that the rails
will not bend on a hot day.
C) Oil and steam pipes are made with loops at certain places
to provide for expansion and contraction of the pipes.

Answer 2

Answer:

There are multiple applications for expansion and contraction of substances.

Explanation:

• The compounds get larger and expand in size as they become heated.
• When something gets cold, it shrinks.
• Two parallel metal rails are linked to form railroad tracks.
• Small gaps, sometimes known as expansion gaps, are intentionally left between the rails because hot weather causes the rails to expand.
• A highly heated glass tumbler will break if we hold it under cold water.
• This occurs when the outer surface of the glass contracts more than the interior surface as a result of direct contact with cold water.
• When telephone lines are manufactured, they are not pushed firmly together since they could flex and break on cold days.
• To allow for expansion and contraction, loops are incorporated into the design of steam and oil pipes at specific locations.

The above are the real-life applications of contraction and expansion of objects.

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