| Topic | Summary |
| Pressure & temperature |
The pressure and temperature of a gas are linked. As pressure goes up and down, so does temperature. |
| Pressure & volume | Pressure and volume are in inverse relation. As one rises, the other falls. |
| Temperature & energy | The temperature of a gas is a measure of how much energy it has. |
| Alloys | An alloy is a combination of materials to make a substance that has properties that are different from the original materials. |
| Engine output | Engine output refers to the torque and power produced by an engine. |
| Power range | The power range of an engine can be described by its 'load factor' which gives its load and speed as an average. |