Meniscus and Displacement Lab
What is a meniscus? How much water is displaced when an object is dropped in a container of water?
Define and illustrate meniscus.
Define and illustrate displacement.
Define Volume. Hypothesis:
Beaker, graduated cylinder, clay, waterProcedure:
1. Measure 50 mL of water in a graduated cylinder.
2. Draw the meniscus.
3. Measure the mass of an empty 250 mL beaker. Record.
4. Pour the water into a 250 mL beaker.
5. Repeat steps 1 and 2, then pour the water into the beaker.
6. Record volume and mass.
7. Draw the meniscus.
8. Obtain a piece of clay and measure the mass. Record.
9. Gently place the clay in the beaker of water.
10. Record the new volume of the contents of the beaker.
11. Determine the displacement of water in the beaker. Record.
12. Remove clay from beaker and dry the clay.
13. Measure the mass of an empty 50mL graduated cylinder. Record.
14. Measure 40 mL of water in a graduated cylinder.
15. Draw the meniscus of the graduated cylinder.
16. Measure the mass of the clay. Record.
17. Gently place the clay in the graduated cylinder of water.
18. Record the new volume.
19. Record the new mass.
20. Repeat steps 13 through 19 with 20 mL of water.
21. Clean table and equipment. Keep clay at your table. Return all other clean materials to cart.
22. Mold clay into a rectangle. Measure and record length, width, and height in centimeters. Multiply these values to determine volume, record.
23. Mold the same piece of clay into a sphere. Measure the diameter of the sphere in centimeters, record. Determine the volume using the formula: v=(4/3)?r³, record.
24. Return clean clay to appropriate location on cart.
|Trial Number||1 (100mL)||2 (40mL)||3 (20mL)||Average|
|Initial Mass of Beaker (g) || || || ||XX|
|Init. Mass of Graduated Cylinder (g)|| || || ||XX|
|Amount of Water (mL)|| || || ||XX|
|Volume of Water and Beaker/Grad. Cyl. (mL)|| || || ||XX|
|Mass of Water and Beaker/Grad. Cyl. (g)|| || || ||XX|
|Mass of Clay (g)|| || || || |
|Mass of Clay, Water and Beaker/Grad. Cyl. (g)|| || || ||XX|
|Volume of Clay, Water and Beaker/Grad. Cyl. (mL)|| || || ||XX|
|Displacement (mL)|| || || || |
| ||Rectangle||Sphere |
|Length (cm)|| ||XX|
|Width (cm)|| ||XX|
|Height (cm)|| ||XX|
|Diameter (cm)||XX|| |
|Volume (cm³)|| || |
Please answer these questions.
1. What was the displacement of water for each trial?
2. What was the mass of the clay for each trial?
3. What was the volume of the sphere? rectangle?
1. What did you notice about the amount of displacement in each trial?
2. Did the mass of the clay change during the experiment? Explain.
3. Compare the volume of the clay in the sphere to the volume of the clay in the rectangle.
4. Compare the volume of the clay in the rectangle to the average displacement of the water.