| A | B |
|---|
| Density | How tightly packed a substance's molecules are (mass/volume) |
| Derived Unit | A unit of measurement formed by combining other units of measurement |
| Graph | A visual display of information or data |
| Kelvin | The SI unit of temperature |
| Kilogram | The SI unit of mass |
| Liter | The unit of liquid volume |
| Mass | The amount of matter in an object |
| Meter | The SI unit of length |
| Second | The SI unit of time |
| SI | International System of Units, the standard worldwide system of measurement used by all scientists |
| Standard | In measurement, an exact quantity that everyone agrees to use for comparison |
| Time | The interval between two events |
| Volume | The amount of space occupied by an object |
