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The Effect of Aspirin The Effect of Aspirin Concentrated Water on the Concentrated Water on the
Growth of Plants Growth of Plants
Tim Ko
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Problem StatementProblem Statement
Will the presence of aspirin concentrated water in soil affect the growth of plants?
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HypothesisHypothesis
If an aspirin concentration of water is increased, then plants will grow at a slower rate.
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Background Background InformationInformation
What is Aspirin?
How to Find the Concentration of Aspirin
Best Environment
Tomato (Lycopersicon esculentum)
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Design DiagramDesign DiagramTitle: The Effect of Aspirin Concentrated Water on the Growth of PlantsHypothesis: If an aspirin concentration of water is increased, then plants will grow at a slower rate.IV : Aspirin Concentration of Water
LevelsWater (0 g/L)
- control5 g/L 10 g/L 15 g/L
Trials 10 10 10 10
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Design Diagram Design Diagram (cont.)(cont.)
DV: Height of Plants (cm)
CONSTANTS: type of soil, amount of soil, type of pots, water (tap), amount of water, type of plant, same environment, planting procedure, depth of seed, same type of aspirin
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MaterialsMaterials Miracle Grow Soil
Tomato Plant Seeds
Water
40 100 mL pots
Cups
Aspirin
Ruler
Clock
Mortar
Pestle
Scale
Spoon
Graduated Cylinder (100 ML)
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ProcedureProcedure1) Plant 40 pots of tomato plants.
2) Label 10 of the pots ‘control’ and label 10 of the pots for each IV (5 g/L, 10 g/L, 15 g/L)
3) For 10 of the pots, water daily with 20 mL of tap water (control).
4) Dissolve aspirin (5 g, 10 g, 15 g) in 1 liter of water.
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Procedure (cont.)Procedure (cont.)
5) Water respectively with 20 mL of water.
6) Observe and record the growth of the plants for 4 weeks.
7) Record observations in a data table.
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Safety CautionsSafety Cautions
Do Not Consume Any Materials Used in this Experiment!
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Before the ExperimentBefore the Experiment
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During the ExperimentDuring the Experiment
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After the ExperimentAfter the Experiment
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ResultsResultsTrials
Control (cm)
5 g/L (cm) 10 g/L (cm) 15 g/L (cm)
1 7.4 3.6 2 0
2 12.9 4.2 2.6 0
3 10.1 2.4 1.5 0
4 10.2 2.6 0.4 0
5 8.4 2.2 1.6 0
6 8.5 3.8 1.8 0
7 8.3 4.3 0.8 0.2
8 8 3.7 2.1 0
9 7.6 3.3 0.9 0
10 8.3 2.9 0.2 0.3
Average 8.97 3.3 1.39 0.05
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Average CalculationsAverage Calculations Control : 7.4 + 12.9 + 10.1 + 10.2 + 8.4 +
8.5 + 8.3 + 8 + 7.6 + 8.3 = 89.7 / 10 = 8.97
5 g/L : 3.6 + 4.2 + 2.4 + 2.6 + 2.2 + 3.8 + 4.3 + 3.7 + 3.3 + 2.9 = 33 / 10 = 3.3
10 g/L : 2 + 2.6 + 1.5 + 0.4 + 1.6 + 1.8 + 0.8 + 2.1 + 0.9 + 0.2 = 14 / 10 = 1.39
15 g/L : 0 + 0 + 0 + 0 + 0 + 0 + 0.2 + 0 + 0 + 0.3 = .5 / 10 = .05
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Results (cont.)Results (cont.)
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Statistical Statistical Analysis(ANOVA)Analysis(ANOVA)Control : 7.4 + 12.9 + 10.1 + 10.2 + 8.4 +
8.5 + 8.3 + 8 + 7.6 + 8.3 = 89.7 / 10 = 9
5 g/L : 3.6 + 4.2 + 2.4 + 2.6 + 2.2 + 3.8 + 4.3 + 3.7 + 3.3 + 2.9 = 33 / 10 = 3.3
10 g/L : 2 + 2.6 + 1.5 + 0.4 + 1.6 + 1.8 + 0.8 + 2.1 + 0.9 + 0.2 = 14 / 10 = 1.4
15 g/L : 0 + 0 + 0 + 0 + 0 + 0 + 0.2 + 0 + 0 + 0.3 = .5 / 10 = .05
Control 5 g/L 10 g/L 15 g/L
Mean 8.97 cm 3.3 cm 1.39 cm 0.05 cm
Sample Size
10 10 10 10
Standard Deviation
1.665 0.744 0.785 0.108
# of groups
4 4 4 4
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Statistical Analysis Statistical Analysis (cont.)(cont.)
5 g/L : 3.6 + 4.2 + 2.4 + 2.6 + 2.2 + 3.8 + 4.3 + 3.7 + 3.3 + 2.9 = 33 / 10 = 3.3
10 g/L : 2 + 2.6 + 1.5 + 0.4 + 1.6 + 1.8 + 0.8 + 2.1 + 0.9 + 0.2 = 14 / 10 = 1.4
15 g/L : 0 + 0 + 0 + 0 + 0 + 0 + 0.2 + 0 + 0 + 0.3 = .5 / 10 = .05
Source of Variation
Sum of Squares
Degrees of Freedom
Mean Square
F-test Statistic
Aspirin Concentration
SSTR = 462.94
3 MSTR = 154.31
FData = 160.74
Error SSE = 35.58
37 MSE = .96
Total SST = 498.52
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Statistical Analysis Statistical Analysis (cont.)(cont.) Total Sample Size = 40
Avg of All plants = 3.428 cm
SSTR = 10(8.97 - 3.428)2 + 10(3.3 - 3.428)2 + 10(1.39 - 3.428)2 + 10(.05 - 3.428)2 = 462.94
SSE = 9(1.665)2 + 9(.744)2 + 9(.785)2 + 9(.108)2 = 35.58
SST = 462.94 + 35.58 = 498.52
MSTR = 462.94/3 = 154.31
MSE = 35.58/37 = .96
F-value = 154.31/.96 = 160.74
Critical Value = 2.79
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ConclusionsConclusions
Results support hypothesis
Experiment shows significant results based on statistical analysis.
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Types of ErrorsTypes of Errors
Initial Planting Procedure
Inconsistent Watering of Plants
Different Environments
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ImprovementsImprovements
Keep all constants as “constant” as possible
More trials
Longer Experiment Time
Precise measurements
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Extensions / Extensions / ApplicationsApplications Experiment with other common medicines.
Be aware of where I dispose of medicine.
Prevent others from making the same mistake.
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Acknowledgements Acknowledgements
Mom and Dad
Mrs. Pietrangelo
Ms. Paine
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BibliographyBibliography Armstrong, W. P. "Tomato, Tomatillo, Eggplant, Nipplefruit & Chayote." WAYNE'S
WORD. 03 Apr. 2008. Web. 05 Oct. 2010.
"Calculations of Solution Concentration." Sciencegeek.net. Web. 05 Oct. 2010.
Campbell, Neil A., Lawrence G. Mitchell, Jane B. Reece, and Martha R. Taylor. Biology Concepts & Connections. 4th ed. San Francisco: Benjamin Cummings, 2003. Print.
"Great Plant Escape - Growing Plants Indoors." University of Illinois Extension-Urban Programs Resource Network - University of Illinois at Urbana-Champaign. Web. 05 Oct. 2010.
Nordqvist, Christian. "What Is Aspirin? What Is Aspirin For?" Medical News Today: Health News. 20 Aug. 2009. Web. 05 Oct. 2010.
"Plant Structure and Function." University of Illinois at Chicago - UIC. Web. 05 Oct. 2010.