| A | B |
|---|
| energy in batteries, food and fuel | chemical |
| energy in moving objects | kinetic |
| energy store in hot objects | thermal |
| another name for strain energy | elastic potential energy |
| energy in stretched, squashed or twisted materials | strain energy |
| energy in high objects | gravitational potential energy |
| energy stored inside atoms | nuclear energy |
| another name for nuclear energy | atomic energy |
| unit of energy | joule |
| shows the amount of energy transferred | Sankey diagram |
| spread out | dissipated |
| reduces friction | lubricant |
| how good a machine is | efficiency |
| best insulator | aerogel |
| vibrations are passed between particles in a solid by | conduction |
| metals are | good thermal conductors |
| wood is a | poor thermal conductor |
| heat transfer in liquids | convection |
| the only way heat can be passed through a vacuum | radiation |
| infrared radiation can pass through | gases and some solids |
| infrared radiation is absorbed and emitted easily by | dull, dark surfaces |
| infrared radiation is absorbed and emitted poorly by | light, shiny surfaces |
| the amount of heat transferred through a material | thermal conductivity (TC) |
| m= | mass |
| g= | gravitational field strength |
| kg= | unit of mass |
| N/kg= | unit of gravitational field strength |
| J | unit of change in GPE |
| 10N/kg | gravitational field strength on Earth |
| 1.6N/kg | gravitational field strength on the Moon |
| the amount of kinetic energy depends on | mass and speed |
| KE | kinetic energy |
| Gravitational potential energy | GPE |
| uranium is | a nuclear fuel |
| most electrical energy in the UK is generated using | nuclear fuels or fossil fuels |
