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PS Ch. 1
Vocab
Term | Definition |
---|---|
Scientific Method | Organized set of investigation procedures that can include stating a problem, forming a hypothesis, researching and gathering information, testing a hypothesis,anlayzing data, and drawing conclusions. |
Hypothesis | Educated guess using what you know and what you observe |
Experiment | Organized procedure for testing a hypothesis, tests the effect of one thing on another under controlled conditions |
Variable | Factor that can cause a change in the results of an expericment |
Dependent Variable | Factor that changes as a result of changes in the other variables |
Independent Variable | Factor that, as it changes, affects the measure of another variable |
Constant | In an experiment, a variable that does not change when other variables change |
Control | Standard used for comparison of test results in an experiment. |
Bias | Occurs when a scientist's expectation change how the results of an experiment are viewed |
Model | Can be used to represent an idea, object, or event that is too big, too small, too complex, or too dangerous to observe or test directly |
Theory | Explanation of things or events that is based on knowledge gained from many observations and investigations |
Scientific Law | Statement about what happens in nature that seems to be true all the time; does not explain why or or how something happens. |
Technology | Applications of science to help people |