| A | B |
|---|
| constant | a factor that does not change |
| control | a standard for a comparison that is often needed to draw a meaningful conclusion |
| dependent variable | a factor whose value changes because of change in the independent variable |
| experiment | an organized procedure for testing a hypothesis |
| hypothesis | a testable prediction used to show how something works or to solve a problem |
| independent variable | a factor adjusted to a different value by the experimenter to see what effect it will have on the dependent variable |
| model | a symbolic representation of an idea, system, or structure to make something understandable |
| observation | using your senses and instruments to gather information |
| physical science | the study of matter and energy |
| scientific law | a rule that describes, but does not explain, a pattern in nature and predicts what will happen under specific conditions |
| technology | a practical use of scientific information to improve the quality of human life |
| theory | The most logical explanation of why things work the way they do. Tested many times and found always to work. |
