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Paper Towel Lab

Paper Towel Lab. 9-27-12. 9-27-12 Bell Work. Draw a picture of a ruler. Draw an arrow to the part where you start measuring. . Daily Review. What is a graduated cylinder used for? What units do you used to measure weight?. 9-27-12 Objective.

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Paper Towel Lab

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  1. Paper Towel Lab 9-27-12

  2. 9-27-12 Bell Work • Draw a picture of a ruler. • Draw an arrow to the part where you start measuring.

  3. Daily Review • What is a graduated cylinder used for? • What units do you used to measure weight?

  4. 9-27-12 Objective • I will come up with an experiment to see which paper towel works better. • HW: None

  5. Paper Towel Lab Which one is the best?

  6. Problem • Today you work for the magazine “Consumer Reports” and your job is to rank the paper towels based on their absorbency . • Bounty Commercial • Consider the science behind their claims: • Was there any data? • Do you believe them? Why should you?

  7. Procedure • With your group, you need to develop a method for testing and ranking the 3 towels for the amount of water they absorb.

  8. Procedure • Other things to consider when developing your procedure: • Do more than one trial • What will you measure? • How will you record your data (hint: data table) • What equipment will you need?

  9. Procedure • When your group has written out your procedures, seek teachers approval. Every group member needs to have these copied down.

  10. Data Collection • Today’s main rule: DO NOT GET THE BALANCES WET

  11. Other Helpful Data

  12. Analysis & Conclusionto be turned in • Which paper towel tested picks up the most water for a given size sheet? (performance) • Which paper towel tested picks up the most water for your money? (value) • Are these answers different or the same? How could they be different? • What are some other things that could be tested? Give an example of a qualitative and quantitative characteristic.

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