GENERAL KNOWLEDGE

Detailed explanation-1: -The faster the molecules of a substance move, the higher the kinetic energy, and the higher the temperature. The slower the molecules move, the lower the kinetic energy, and the lower the temperature.

Detailed explanation-2: -Cold things have slow-moving molecules, while hot things have fast-moving molecules. In fact, temperature is really a measurement of molecule speed. For a cold thing to get warm, its molecules have to speed up.

Detailed explanation-3: -When an object is heated the heat energy given excites the molecule and hence increases its kinetic energy because of which molecules start moving faster and its velocity is known as root mean square (RMS) velocity of molecule.

Detailed explanation-4: -Key Concepts. Heating a liquid increases the speed of the molecules. An increase in the speed of the molecules competes with the attraction between molecules and causes molecules to move a little further apart.

Detailed explanation-5: -Heat, once absorbed as energy, contributes to the overall internal energy of the object. One form of this internal energy is kinetic energy; the particles begin to move faster, resulting in a greater kinetic energy. This more vigorous motion of particles is reflected by a temperature increase.