Question

What are two real life examples of expansion in solids\[?\]

Answer 1

Hint: First we have to know what is the expansion in solids. After that give two real life examples of expansion of solids. We have to give examples where a given substance converts into another state of the given substance.

Complete step by step answer:
All three states of matter (solid, liquid and gas) expand when heated. The atoms themselves do not expand, but the volume they take up does. When a solid is heated, its atoms vibrate faster about their fixed points. An increase in temperature results in the expansion of the liquid which means it rises up the glass.
 Water converting into ice: Water, being one of the only substances found here on Earth that can exist in the three natural states from normal pressure, freezes and boils at relatively normal temperatures that can be achieved in a normal environment.
 When water freezes, it's particles contract (when being frozen), and then slightly expand.
However, when water is boiled, it's particles expand quickly depending on the temperature.
 A liquid, when heated, will expand and can be made to rise up a tube.
 Thermometers use the expansion of a liquid such as mercury or alcohol to measure the temperature using a calibrated scale. The cables that hang between electricity pylons must have some loose means not tightly in position on them. The same happens in all liquids and gases, driving natural heat transfer upwards in homes, oceans, and weather systems. Solids also undergo thermal expansion. Railroad tracks and bridges, for example, have expansion joints to allow them to freely expand and contract with temperature changes.

Note:
Note that in solids, molecules are ordered and in contact. In liquid, molecules are disordered and in contact. In gas, molecules are completely disordered and not in contact.