| A | B |
|---|
| hypothesis | A prediction about the effect that changes in an experiment have on the measurable outcome of the experiment |
| experimental design | The idenification, manipulation, and relationship of variables |
| experiment | A test for a hypothesis |
| controlled experiment | An experiment with only two test groups- an experimental (manipulated) group and a control group |
| trial | A complete experimental run that includes testing all levels of the independent variable |
| repeated trial | The number of times an experiment is conducted after the initial run |
| constants | The factors in an experimnent that have a fixed value and remain the same for all levels of the IV |
| independent variable | The factor that is purposely changed in an experiment |
| levels of the independent variable | The specific categories or values of the IV that are tested in an experiment |
| control | The level of the IV that serves as the standard for comparing experimental effects |
| dependent variable | The factor that is measured in an experiment as a result of its response to the changes in the IV |
| scientific law | A theory, dealing with events governing the universe or describing a pattern in nature, that has been upheld for many years and is accepted as fact |
| theory | A proven hypothesis that is supported by many experiments and consistent data |
