1. Temperature
Is a property of an object which determines the direction of net heat flow when an object is placed in contact with some other object.
Heat is a form of energy while temperature gives an indication of “hotness” or “coldness”

2. On a molecular level the temperature of a body is a measure of the average kinetic energies of the molecules of the body

3. Three major methods of heat transfer in materials
Conduction – mostly in solids
Convection – mostly in fluids
Radiation – mostly in a vacuum or gases

4. Convection
By the variation of density of the material a convection current is set up such that the less dense fluid rises and the more dense fluid sinks to below

5. Radiation
Transfer of heat energy via electromagnetic waves because the energy travels in a combination of electric and magnetic waves.
This energy is released when these waves are absorbed by an object.
For example, energy traveling from the sun to your skin, you can feel your skin getting warmer as energy is absorbed.