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Experimental Design

Experimental Design. Flow Rate Revisited. NOT measured in length over time Then what is the unit? Amount of fluid coming through in a certain time Niagra Falls of Corn Syrup vs. Fire hose of oil. Restaurant Problem. 2 different fluids (oil and mayonaise ) 2 different viscosities

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Experimental Design

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  1. Experimental Design

  2. Flow Rate Revisited • NOT measured in length over time • Then what is the unit? • Amount of fluid coming through in a certain time • Niagra Falls of Corn Syrup vs. Fire hose of oil

  3. Restaurant Problem... • 2 different fluids (oil and mayonaise) • 2 different viscosities • 2 different containers • It takes the same time to fill cups of either • Which has the largest flow rate?

  4. Changes to the lab • No longer looking at which fluid can flow the fastest • BUT looking at how much fluid can flow over a certain time

  5. What could affect your results • Tilt of container you are pouring fluid from • Tilt of plane you are pouring it onto • Viscosity of fluid • Diameter of container you are pouring the fluid from

  6. For this lab (Write this down!) • Only looking at the effect of temperature • What does that mean for • Tilt of container you are pouring fluid from • Tilt of plane you are pouring it onto • Viscosity of fluid • Diameter of container you are pouring the fluid from

  7. Designing your experiment • I will give you: A fluid at 2 different temperature • Problem – What are we trying to figure out? • Hypothesis – What do you think is going to happen? • Materials – What do you need? • Procedure – What are you going to do? How many times? • Result – What happened? • Discussion – Why did that happen?

  8. Low flow shower head • http://www.youtube.com/watch?v=6467uwBeNhE

  9. Discussion (everyone should contribute) • Why did you get the results you got? • Do your results make sense? • What could have affected you results? (bias) • What worked well? • What would you do differently next time? • Don’t forget! • Write your role • Clean up your station • 1 copy per group

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