Race your marbles to find a liquid

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Race your marbles to find a liquids viscosity

• By Enrique Figueroa

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My Questions

• What is viscosity?
• What is the viscosity of detergent, oil and
  water?
• How can I measure viscosity?

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Hypothesis

• I will find the viscosity of detergent, oil, and
  water.
• I believe detergent will have the most viscosity,
  then oil, and water will have the least
  viscosity. I think this because detergent feels
  thicker on my finger when its running down my
  finger.

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Materials

• I will need detergent, oil, water, 3 marbles,
  three of the same size containers, and a timer.

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Variables

• These are things that can affect my experiment
• How high I drop the marble.
• The amounts of the liquid.
• The sizes of the marbles.
• The temperature of the liquid.

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Procedure

• I will use three 500ml water bottles and pour in
  the same amount of detergent, oil, or water.
• Next I will drop a marble in each container and
  time how long it takes for the marbles to reach
  the bottom. Then I will repeat this step three
  times with all three liquids. I will do this to
  make sure the results are accurate.
• I will record the time in a table on a sheet of
  paper.
• Finally I will compare my collected data.

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Analysis

• Viscosity means the resistance of a fluid or in
  everyday terms thickness.

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Analysis
Time Deter-gent Oil Water
1 1.26sec 0.91sec 0.63sec
2 1.16sec 1.05sec 0.66sec
3 1.51sec 0.92sec 0.72sec
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Analysis

• The detergent needed 1.16 seconds to 1.51seconds.
  
• The oil needed 0.91 seconds to 1.05 seconds.
• The water needed 0.63 seconds to 0.78 seconds.
• Detergent is the most viscous, oil is less
  viscous, and water is the least viscous.

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Analysis
This graph shows that my hypothesis is correct.
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Conclusion

• I learned that you can measure viscosity by
  timing how long it takes a marble to travel
  through a fluid.
• I also learned that detergent is thicker than oil
  and water. Detergent is the most viscous because
  when I timed the marble it took the longest to
  reach the bottom. When I dropped the marble in
  the water it reached the bottom in less then a
  second. Water has the least viscosity.