MiniLab: How Many Drops?
Meet in your small group.
Hypothesis: Record on your Data Sheet

What is the relationship between the diameter of the coin and the number of drops of water
that the coin will hold?
Lab Procedure:
(1) Collect a Lab Tray. Write your Lab Tray Number in the top corner of your Lab Data Sheet.
(2) Measure the diameter of each of your coins in millimeters. Record in your Data Table.
(3) Using the disposable pipet, add drops of water to the surface of your coin until it is filled.
You will know it is full because the water spills over the side of the coin. Be prepared with a
paper towel!
Record the number of drops that your coin holds in your data table.
Note: Be as consistent as possible with the size of your drops!
If you make a mistake – start over.. Dry your coin completely to ensure accurate results.
Graph:
Label your Graph
X Axis: Diameter (mm)
Y Axis: Number of Drops
Title your Graph (Class Discussion)
Plot your data on the graph paper provided.
Do not connect your data points.
Analysis:
Do you accept or reject your hypothesis? Explain.
Name: ______________________________
Date: August 25, 2014
Lab Tray Number: _________
Data Sheet:
Hypothesis:
______________________________________________________________________________
______________________________________________________________________________
______________________________________________________________________________
Data Table:
Coin
Penny
Nickel
Dime
Quarter
Diameter (mm)
Number of Drops
Analysis:
Do you accept or reject your hypothesis? Justify your answer.
Grading Rubric:
Category
Hypothesis
Data Table
Graph
- Label Axis
- Title
- Points Plotted
Analysis
Total
Points Earned
Points Possible
5
16
14
5
40
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