Presentation on theme: "Scientific Method Method of scientific investigation Four MAJOR steps:"— Presentation transcript:
1 Scientific Method Method of scientific investigation Four MAJOR steps: Identify a problemForm a hypothesisPerform an experimentConclusion
2 Identify a problem Phenomena that requires investigation Questions Why?How?What?When?Where?
3 Form a Hypothesis Make observations Collect data Research previous informationUse observations, data, research to form aHYPOTHESISAn educated ‘guess’ that bestanswers the problem
4 Conduct an Experiment Test hypothesis by controlling variables An experiment should test the hypothesis onlyOther variables must be strictly controlledInsures validityExperiments must be reproducibleIndependent scientists must be able to performthe same experiment and obtain the same resultsreliability
5 Conclusion Test results determine whether hypothesis was true or not trueIf hypothesis is false, redesign and rerun experimentHypothesis are often falseLeads to discovery of the truth
6 Theory HYPOTHESIS supported by many experiments over time Assumed to be the explanation for phenomenaCan NEVER be provedCan be DISPROVED with new scientific evidence