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Scientific Method

Scientific Method. What is the Scientific Method? Steps to Solving a problem Observe a Problem Research the Problem Experiment Collect Data Draw a Conclusion. Define/State the Problem. Based on Observations Include your 5 senses: Touch,smell,taste,sight,hear. Hypothesis.

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Scientific Method

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Presentation Transcript

  1. Scientific Method • What is the Scientific Method? • Steps to Solving a problem • Observe a Problem • Research the Problem • Experiment • Collect Data • Draw a Conclusion

  2. Define/State the Problem • Based on Observations • Include your 5 senses: Touch,smell,taste,sight,hear

  3. Hypothesis • Educated Guess • Based on Observations, Inferences, and Previous knowledge • A hypothesis is written BEFORE the experiment!

  4. Experiment • Control Group: Part of experiment that is not changed! All conditions are kept the same • Experimental Group: All conditions kept the same except one condition!

  5. Experiment • Variable: the 1 condition that is changed! • There is only 1 variable in an experiment!

  6. Data • Dependant Variable: Condition that results from the independent variable. • Independent Variable: The condition that is changed. Variable that affects the outcome of the experiment. • Example: Rainfall - month

  7. Conclusion • Collect Data to prove or disprove your hypothesis. • Graph or Tables • If positive result – repeat • If negative result – make new hypothesis and test over.

  8. Theory/Law • Theory: Well tested hypothesis • Law: Fact • When does a hypothesis become a theory? When it is proven many times.

  9. Popcorn Problem • Alice accidentally put the jar of popcorn kernels in the freezer. She usually keeps the kernels at room temperature. Alice observed that when she popped the frozed popcorn kernels, they seemed to pop more popcorn.

  10. Popcorn Problem • State the problem: Does frozen popcorn pop more? • What was the observation made? Frozen popcorn seemed to pop more. • Form a Hypothesis: If you freeze popcorn then the popcorn will pop more.

  11. Popcorn Problem • Control: Popcorn at room temp. • Variable Popcorn in the freezer • Constants: Same popcorn, same amount of time, same amount of popcorn, exp. Date, temp.

  12. Popcorn Problem • Data:

  13. Popcorn Problem • How could we show our data in picture form? • Dependant Variable? Amount Popped • Independent Variable? Frozen Popcorn

  14. Popcorn Problem • Conclusion: Frozen Popcorn pops more than popcorn at room temperature!

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