| A | B |
| Observation | When you use one or more of your five senses to gather information about the world |
| Inference | When you interpret an observation |
| Prediction | Making an inference about a future event based on current evidence or past experience |
| Hypothesis | A possible explanation for a set of observations or answer to a scientific question |
| Controlled experiment | An experiment in which all factors except one are kept constant |
| Variable | Any factor that can change in an experiment |
| Manipulated or independent variable | The factor that you change |
| Responding or dependent variable | The factor that changes as the result of the manipulated variable |
| Scientific Method | A series of steps scientists use to organize their work |
| Data | The observations and measurements you make in an experiment |