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PS Ch1
Vocabulary
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, analyzing data, and drawing conclusions. (p.7) |
Hypothesis | Educated guess using what you know and what you observe. (p.8) |
Experiment | Organized procedure for testing a hypothesis; tests the effect of one thing on another under controlled conditions. (p.8) |
Variable | Factor that can cause a change in the results of an experiment. (p.9) |
Dependent Variable | Factor that changes as a result of changes in the other variables. (p.9) |
Independent Variable | Factor that, as it changes, affects the measure of another variable. (p.9) |
Constant | In an experiment, a variable that does not change when other variables change. (p.9) |
Control | Standard used for comparison of test results in an experiment. (p.9) |
Bias | Occurs when a scientist's expectations change how the results of an experiment are viewed. (p.10) |
Model | Can be used to represent an idea, object, or event that is too big, too small, or too complex, or too dangerous to observe or test directly. (p.11) |
Theory | Explanation of things or events that is based on knowledge gained from many observations and investigations. (p.12) |
Scientific Law | Statement about what happens in nature that seems to be true all the time; does not explain why or how something happens. (p.12) |
Technology | Application of science to help people. (p.13) |