Question

Mention three different effects produced by heat. Explain?

Answer 1

Hint: Heat can increase the volume of an object usually and it brings the chemical action as well. Heat also increases the energy of the particles Constituting the material.

Complete step by step solution:
 (1). Change in State:- Change in State where a body changes from one physical state to another or size of an object can be changed. For eg .. If we heat gold at a very high temperature, then the gold (which is in solid state) turns into its liquid state. Or when we heat a solid ice cube then it turns into its liquid state (water).
(2). Raise in temperature:- Temperature is a measure of the kinetic energy of motion of the molecules. The equation can be derived from Statistical methods found in the Kinetic Molecular Theory of Gases. Suffice it to say that Kinetic energy is directly proportional to absolute Temperature. As we add heat to a substance, we speed up the motion of the molecules in substance, hence, we increase their kinetic energy. So as we add heat to a substance, the temperature Increases.
(3). Change in Physical Property:- When heat is passed through a material, its shape changes. Generally, a material expands when heated. This property of a material is called thermal expansion. There can be a change in the area, volume, and shape of the material. For example : Blacksmith heat iron at a very high temperature and then usually they are able to change the shape and size of that iron and make a particular structure of iron.

Note: The change in the temperature of the body where the body which is heated, rises when it is cooled it falls. This change in temperature depends on the quality of heat absorbed or given out by the body.