| A | B |
|---|
| kinetic energy | Energy of a moving object |
| potential energy | Energy stored in an object or material |
| temperature | The average kinetic energy of the molecules in a material |
| heat | Energy that flows between objects that have different temperatures |
| radiation | The transfer of energy by electromagnetic waves |
| conduction | The spread of molecular motion between areas of different temperatures that are in contact |
| convection | The transfer of energy by the flow of a liquid or gas |
| insulation | Prevents heat from flowing in or out of a material |
| thermal expansion | The expansion of matter when its temperature is raised |
| pressure | The force on each unit of area of a surface |
| melting | The change of a solid to a liquid |
| vaporization | The change of a liquid to a gas as molecules break free from each other |
| condensation | The change of a gas into a liquid as molecules attract each other |
| freezing | The change of a liquid into a solid |
| boiling | The formation of bubbles of vapor that escape from a liquid that is being heated |
| evaporation | The vaporization of molecules from the surface of a liquid |
| solar cell | A device that generates an electric current from sunlight |
| biomass conversion | Getting energy from plant and animal materials by changing them into high-quality fuels |
| nuclear fission | The splitting of a nucleus with a large mass into two nuclei with smaller masses |
| chain reaction | A reaction that is kept going by products of the reaction. |
| nuclear fusion | The merging of nuclei with smaller masses into a nucleus with a larger mass |
| hydroelectricity | The use of flowing water to generate electricity |
| thermal pollution | The excess heating of the environment |
