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# Water Displacement

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by

## Whitney Pennington

on 7 May 2014

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#### Transcript of Water Displacement

Conclusion
Our hypothesis stated: "If a nickel is dropped into a graduated cylinder, then the volume of the water will increase"
Problem Statement:
How will the volume of the water in a graduated cylinder be affected if we dropped one nickel into the water? Two Nickels? Three? Etc.

Hypothesis:
If a nickel (independent variable) is dropped into a graduated cylinder, then the volume of the water (dependent) will increase.
Quantitative Data

Trial 1 Trial 2 Trial 3 Average
1 Nickel 20.8 mL 21.0 mL 20.9 mL 20.9 mL
2 Nickels 22.0 mL 22.4 mL 23.0 mL 22.5 mL
3 Nickels 24.0 mL 23.7 mL 24.2 mL 24.0 mL
4 Nickels 25.0 mL 25.5 mL 25.8 mL 25.4 mL
5 Nickels 26.0 mL 26.3 mL 26.0 mL 26.1 mL
All Variables
Materials & Procedure
Water Displacement
Materials include:
-Water
-Nickels
Procedure:
1. Gather all the materials listed above.
2. Fill the cylinder with water to the 20 mL mark.
3. Drop a single nickel in the graduated cylinder
4. Record the new volume.
5. Empty the beaker.
6. do steps 2-5 with 2,3,4 and 5 nickels.
Independent Variable = amount of water after the nickels are dropped.
Dependent Variable = number of nickels dropped into the graduated cylinder.
(the volume of the water after the nickels are dropped depends of the number of nickels dropped)
Controlled Variable = the amount of water after the nickels are dropped.
Possible errors
-More accurate measurements of water in the graduated cylinder.
-Not dropping all the nickels in at once, so the water doesn't splash out of the graduated cylinder.
-More accurate measurements of the water displacement after the nickels have been dropped.
Our hypothesis was accepted. We conclude that as you drop nickels into the water, the total volume will increase.
Recommendations
For future experiments, in order to get more accurate results, we should read the graduated cylinder more closely. Also, we could drop the nickels into the cylinder more carefully so water doesn't splash out.
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