Scientific Method Method of scientific investigation Four MAJOR steps:

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Presentation transcript:

Scientific Method Method of scientific investigation Four MAJOR steps: Identify a problem Form a hypothesis Perform an experiment Conclusion

Identify a problem Phenomena that requires investigation Questions Why? How? What? When? Where?

Form a Hypothesis Make observations Collect data Research previous information Use observations, data, research to form a HYPOTHESIS An educated ‘guess’ that best answers the problem

Conduct an Experiment Test hypothesis by controlling variables An experiment should test the hypothesis only Other variables must be strictly controlled Insures validity Experiments must be reproducible Independent scientists must be able to perform the same experiment and obtain the same results reliability

Conclusion Test results determine whether hypothesis was true or not true If hypothesis is false, redesign and rerun experiment Hypothesis are often false Leads to discovery of the truth

Theory HYPOTHESIS supported by many experiments over time Assumed to be the explanation for phenomena Can NEVER be proved Can be DISPROVED with new scientific evidence