| A | B |
| conduction | The transfer of energy through the direct contact of its particles |
| convection | The transfer of energy through the motion of matter |
| radiation | The transfer of energy through waves with out the need of matter |
| conductor | A material that allows thermal energy to easily conduct through it |
| insulator | A material that dosn't allow thermal energy to pass through it |
| radiant energy | Energy that travels through radiation |
| fluid | Any material that can flow |
| metals | The best material that can flow |
| radiator | A device with a large surface area designed to heat the air near to it |
| solar energy | Energy from the sun |
| solar collector | A device designed to capture the suns solar energy |
| passive solar heating | Heating without the use of fans or machines |
| active solar heating | Heating with solar collectors |
| thermal pollution | Waste thermal energy that significantly changes the temperature of the enviroment |
| cooling tower | A device designed to reduce the thermal energy expelled into th enviroment |
| combustion | Rapid burning of fuel |
| heat mover | A device that moves thermal energy from one location and transfers it to another location at a different temperature |
| external combustion engine | An engine that burns its fuel outside of itself |
| internal combustion engine | An engine that burns fuel inside itself in a cylinder |
| heat pump | Two-way heat mover |
| heat engine | Device that converts thermal energy into machanical energy |
| stroke | movement of a piston, up or down |
| intake stroke | Piston moves downward and draws a fuel air mixture into the cylinder from the intake valve |
| compression stroke | Intake valve closes and the piston moves up and compresses the fuel |
| power stroke | Fuel ignites forcing the piston donward |
| exaust stroke | The piston moves up, compressing the waste products and then the exaust valve opens and the wastes are expelled |