| A | B |
| British thermal units | A unit of energy. |
| power | The rate at which work is done or energy is released. |
| metric system of measurement | A system of measurement based on the decimal system. |
| meter | The basic unit of length in the metric system. |
| gram | The basic unit of mass in the metric system. |
| liter | The basic unit of capacity in the metric system. |
| calories | A unit of energy in the metric system. |
| watt-hour | A unit of electrical energy in the metric system. |
| weight | A measurement of how strongly Earth is pulling on an object. |
| capacity | A measure of liquid substances. |
| energy | The ability to do work. |
| measurement | Has both a number and a unit. |