When the wire cools down, its particles will slow down and move closer together. This causes the wire to contract or shrink in size. This contraction is known as thermal contraction. The cooling process causes the wire to return to its original size and shape as it was before it was heated. This is because the thermal energy that caused the wires to expand is now removed, allowing the particles to move closer together. The cooling process is reversible, and the wire will return to its original state once it has cooled down.
