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PS ch1
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, analyzing data, and drawing conclusions |
Hypothesis | educated guess using what you know and what you observe |
Experiment | organized procedure for testing a hypothesis; test the effect of one thing on another under controlled conditions |
Variable | factor that can cause a change in the results of an experiment |
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 do |
Control | stranded 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 how something happens |
Technology | application of science to help people |