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Scientific Method

Learn about the scientific method and how to conduct experiments using observation, hypothesis testing, data collection, and conclusion reporting. Discover the importance of verifying results and the role of variables in experiments.

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Scientific Method

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  1. Scientific Method

  2. StepS Data Collection Conclusion Report Results Verify Results • Observation • Ask Questions • Hypothesis • Experiment

  3. Observations Gathered through your senses • See • Touch • Hear • Smell • Taste Example: seeing that many salamanders near a pond have curved (not straight) tails

  4. Hypothesis • Suggested solution to the problem • Must be testable • Written as If…Then… statements • Predicts an outcome Example: If salamanders live near polluted soil, then they will have curved tails.

  5. Hypothesis vs. Theory

  6. Experiment • A procedure to test the hypothesis • Variable – factor in the experiment that is being tested

  7. Variables • The factor that is changed is known as the independent variable. • The factor that is measured or observed is called the dependent variable. • The experimenter makes a special effort to keep other factors constant so that they will not effect the outcome. • Controls are not tested. They are they comparison. Example: Suppose you want to figure out the fastest route to walk home from school. You will try several different routes and timehow long it takes. Each time you walk at the same pace.

  8. Data • Results of the experiment that are orgainized into charts, graphs, tables, etc. • May be quantitative or qualitative • Quality • Quantity (#s)

  9. Conclusion • The answer to the hypothesis based on the data obtained from the experiment

  10. Report & Verify results In order to verify the results, experiments must be retested by other scientists

  11. Homework: Due Tomorrow Think of something you would like to do an experiment on. (YOU WILL NOT HAVE TO DO THIS EXPERIMENT!) Fill out the scientific method chart.

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