Viscosity Races

By Manal

Aim: To test the rate at which different fluids flow.

Hypothesis-My group predicted that water has the fastest flow rate and that mayonnaise would have the most viscosity.

Materials needed:

A stop watch

A tape measure

A ramp-a table with two tote trays [secured with masking tape]

30mls of each different liquids to test [water, oil, tomato sauce, honey and mayonnaise]

Small container

Pencils

Recording table/sheets

A plastic drop cloth to catch the mess

Calculators

Methods:

1) Measure out 30mls of each liquid.

2) Set your stop watch to zero.

3) Tip one liquid at a time from the top of the ramp. Remember to communicate with tour group to ensure the timer starts as you tip the liquid.

4) Let the liquid flow for the set time you have decided and measure the distance travelled.

5) Record your results in the table.

6) Repeat for each type of liquid, recording your results as you go.

7) Clean your ramp for the next test.

8) Tip one liquid down the ramp and time how long it takes to reach the bottom.

9) Record your results on the table.

10) Repeat for each type of liquid, recording your results as you go.

11) Record each group’s results as they become available.

12) Using the calculator, determine the mean distance and speed for each liquid.