CONDUCTION
Conduction is the transfer of energy through solid matter from particle to particle. Heat is conducted through a solid material much the same way electricity is. Conduction is slowed by insulation. (Direct Touch)
CONVECTION
Convection is the transfer of heat energy through a gas or liquid by movement of currents. Heat is carried by the fluid. When warm air comes out of a register, it rises. This action is called thermal buoyancy. As it cools, it falls. This rising and falling movement is called convection current. Convection can be interrupted by a physical barrier. (Movement of Hot Air / Liquid)
RADIATION
Radiation is electromagnetic waves which directly transport heat energy through space. Sunlight is radiated through space to our planet without the aid of fluids or solids. Through radiation, the sun transfers heat through 93 million miles of empty space! Heat energy transferred through radiation can be interrupted by a material which reflects it. (Heat through waves)
Also Check Out: Bill Nye - Heat Transfer Video
