Answer :
When you heat up an object three things could possibly happen:
i) Increase in temperature of the object. Imagine heating up water, the temperature increases.
ii) Linear Expansion: The object could increase in length. For example if you heat up a steel rod, the length would increase as a result of linear expansion.
iii) Change of State: The object could change from solid state to liquid state or from liquid state to gaseous state, as the case may be. For example heating ice block to liquid water.
i) Increase in temperature of the object. Imagine heating up water, the temperature increases.
ii) Linear Expansion: The object could increase in length. For example if you heat up a steel rod, the length would increase as a result of linear expansion.
iii) Change of State: The object could change from solid state to liquid state or from liquid state to gaseous state, as the case may be. For example heating ice block to liquid water.
