| A | B |
| Observing | It is through the process of observation that all information is acquired. |
| Pendulum | Any weight suspended on a string, rope, or other arm that is free to pivot from an anchor point. |
| Cycle | One complete swing back and forth. |
| Variable | Anything you can change that might affect the outcome of an experiment. |
| Galileo | Toward the end of the 16th century, he made careful observations of the pendulum and described its behavior in mathematical terms. |
| Hypothesis | Prediction which states what the experient will test. |
| Conclusion | Includes a brief summary of the analysis of the data and an explanation of whether the data supports the hypothesis. |
| Scientific Method | A system for solving problems. |
| Variable | Anything you can change that might affect the outcome of an experiment. |