Convection When less dense materials rise and denser materials sink because of gravity. PICTURE: Convection is used in the kitchen when we boil water to make tea. The heated water goes to the top and the cold water gets pushed to the bottom of the teapot.
Conduction When heat or electricity is transmitted through a substance of different temperatures. PICTURE: The match that the man has in his hand is an example of conduction because when he strikes it, on one side of it, it has fire and on the other side that he is holding it from it is not hot and doesn't have the fire on it.
Radiation Energy in the form of rays or waves. PICTURE: The sun is an example of radiation because it has ultraviolet light.