Determining the viscosity of a fluid
20 Points
Name:__________________________ Date:____________ Period:______
In this activity, each group examines 3 tubes containing liquids of differing viscosities. They time an air bubble's rise through the tube.
1. Determine the mass of each tube in grams. Write it in the table below.
2. Determine the length of each tube in meters. Write it in the table below.
3. Time how long it takes for the bubble to rise the complete length of the tube. Write it in the table below.
4. Compute speed. Write it in the table below.
| Green Tube | A | B | A/B |
|
Mass: |
Tube Length (m) | Time (sec) |
Bubble Speed (m/s) |
|
1 |
|
||
| 2 | |||
|
3 |
|
||
| Total | |||
|
Mean |
|
| Red Tube | A | B | A/B |
|
Mass: |
Tube Length (m) | Time (sec) |
Bubble Speed (m/s) |
|
1 |
|
||
| 2 | |||
|
3 |
|
||
| Total | |||
|
Mean |
|
| Blue Tube | A | B | A/B |
|
Mass: |
Tube Length (m) | Time (sec) |
Bubble Speed (m/s) |
|
1 |
|
||
| 2 | |||
|
3 |
|
||
| Total | |||
|
Mean |
|
5. Use a graph to compare the speeds of the 3 tubes. Choose the correct graph and place the variables on the correct axes.
6. Which tube color is the slowest? ________
7. What is the speed of the fastest?___________
8. The fluid in the slowest tube has the greatest viscosity. Write your definition of viscosity below.