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The Scientific Method

The Scientific Method. 2/18/1996. Testable Can be Falsified Verifiable Based on Evidence Example: Astronomy. Not Testable Believed to be infallable Not Verifiable Based on Belief Example: Astrology. Science vs. Non-Science. Steps of the Scientific Method.

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The Scientific Method

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  1. The Scientific Method 2/18/1996

  2. Testable Can be Falsified Verifiable Based on Evidence Example: Astronomy Not Testable Believed to be infallable Not Verifiable Based on Belief Example: Astrology Science vs. Non-Science

  3. Steps of the Scientific Method

  4. Think you can name all five steps? Problem Hypothesis Procedure Results Conclusion

  5. Everyday Science • Scientific Method for Car Repair • Problem- Why won’t the engine start? • Hypothesis-Predict battery is dead. • If the battery is jumped-started, then the engine will start. • Procedure-Jumpstart battery. • Results- Engine now starts. • Conclusion- Cars won’t work without a fully charged battery.

  6. Problem • A problem is a question based on your observations.

  7. Hypothesis • Testable statement that predicts what will happen • Should be written as an if-then statement • If-how you are going to test the hypothesis • Then-what will happen • If the plant is not watered, • Then the plant will die.

  8. Procedure • The steps you will take to test your hypothesis. • May include a control • Should include an independent variable and a dependent variable. • Independent variable-what you change in the experiment (not watering the plant) • Dependent variable-what you expect to change or respond to the independent variable (the plant dies)

  9. Control • Part of an experiment that is not changed and is the standard against which the results are compared • Some experiments do not have a control

  10. Do you remember the next step? • ResearchB. ResultsC. ObservationsD. Conclusion

  11. Results • Collect data & record observations. • Organize information into charts, tables or graphs.

  12. Based on numbers Data based on measurements Example: It is 35OC outside Based on description Data based on observations Example: It is hot outside Quantitative vs. Qualitative

  13. Mrs. Clevenger is 1.6 meters tall The chemical has a strong odor The ice cube has a mass of 2.1 grams Coca cola is very acidic Coca cola has a pH of less than 1 Are the following resultsA. Quantitative or B. Qualitative?

  14. Conclusions • Think about the results of your experiment. What does it mean? • Accept, Reject, or Revise Hypothesis

  15. If black cats cross your path, it is bad luck If my mom passed those genes on to me, then I inherited my brown hair from my mom. If my horoscope say so, then I will meet new people today. If it exists, then God put it there. Are the following statements A. Science or B. Non-Science?

  16. Think you can name all five steps? Problem Results Hypothesis Conclusion Procedure

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