Ron and Tiffany Are Studying Circulatory System Function -Which Statement Best Summarizes the Results of the Experiment?
A)

question 63

Multiple Choice

Ron and Tiffany are studying circulatory system function. They designed an experiment to test whether the diameter of a tube affects the rate of flow through the tube. In their experiment, they ran water from a large container through five tubes with different diameters for exactly 30 seconds for each tube. They measured the volume of liquid that passed through the tube during the 30-second period, testing each tube three times and pouring the water back into the container after each test. The results of the experiment are shown in the following table.
$\begin{array} { | l | l | l | } \hline& \text { Diameter of } &{ \text { Average Volume } } \\ & \text { Tube } ( \mathrm { cm } ) & \text { Fluid (mL) } \\\hline \text { Tube A } & 0.5 & 210 \\\hline \text { Tube B } & 0.6 & 350 \\\hline \text { Tube C } & 0.7 & 480 \\\hline \text { Tube D } & 0.8 & 600 \\\hline \text { Tube E } & 0.9 & 975 \\\hline\end{array}$
-Which statement best summarizes the results of the experiment?

• A) The larger the tube diameter, the greater the flow volume.
• B) The larger the tube diameter, the smaller the flow volume.
• C) The tube diameter shows no clear relationship to flow volume.

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