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QSR #9—JUST COPY PROBLEMS #1 AND #2

Understand the scientific method through practical scenarios. Learn to define problems, form hypotheses, conduct experiments, analyze data, and draw conclusions. Examples and guidelines included.

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QSR #9—JUST COPY PROBLEMS #1 AND #2

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  1. QSR #9—JUST COPY PROBLEMS #1 AND #2 • In the following 2 scenarios, list the independent variable, the dependent variable, and the control variable(s). • 1. We are going to test to see which spray cleaner works best. • 2. You want to see which running shoe helps you run faster.

  2. Scientific Method Blueprint For Success

  3. 1. Define the Problem • State the problem as a clear question. • Ex:Will the use of Exxon gasoline give my car better gas mileage?

  4. 2. Form a Hypothesis in the form of an “If -Then” Statement • IF “independent variable”, then “dependent variable”. • Examples: • If I use Exxon Gasoline, then my car will get better gas mileage.

  5. 3. Develop a Controlled Experiment Come up with materials, and steps needed

  6. Let’s Look at an Example! Gasoline’s Affect on Car Mileage.

  7. What are Some Possible Variables? • Car type • Gasoline type • Driver • Driving Conditions • Amount of gasoline • Tires • Extra weight in car

  8. If we are testing gasoline, what variables must be kept constant? • The cars must be of the same type. • Each car must have the same amount of gasoline. • The cars must be driven over the same course, at the same speed, and under the same weather conditions. • The cars must contain the same type of tires. • The only difference is the type of gasoline.

  9. 4.Conduct the Experiment • several times!!!!!! • Reduce error/luck • Increase accuracy

  10. 5.Analysis of Data • Include charts and/or graphs to show your results!!! (very important)

  11. 6.Form a Conclusion • Was my hypothesis correct? EXPLAIN

  12. QSR #11 • 1. What role does a hypothesis play in scientific inquiry? • 2. Describe an example of biotechnology (Biology + technology working together):

  13. Observation • All scientific investigations begin with OBSERVATIONS • Includes using our senses and other tools (ex:computers) • This then leads to SCIENTIFIC QUESTIONS 

  14. Write down at least 3 or 4 observations from the pictures below:

  15. Data 1. Qualitative – description using WORDS Ex: McDonalds fries are the best! 2. Quantitative – uses NUMBERS Ex: McDonalds sells over 1000 packs of fries per day

  16. Make 2 qualitative and 2 quantitative statements about the picture below:

  17. Scientific Theory: A proposed explanation for observations and experimental results is supported by a wide range of evidence Can eventually become broadly accepted Ex: Continental Drift Theory, Big Bang theory

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