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Soil or Sand Biology Emily Wood. Science Fair Project. Do plants grow faster in soil or sand?. Statement of the Problem . I wrote a research paper. Then after typing up the procedure I gathered the materials, I started my project. I monitored the plants for ten days, then collected the data.
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Soil or Sand Biology Emily Wood Science Fair Project
Do plants grow faster in soil or sand? Statement of the Problem
I wrote a research paper. Then after typing up the procedure I gathered the materials, I started my project. I monitored the plants for ten days, then collected the data. Project Overview
Potting soil is better to plant flowers in. • Plants need water so that they can grow roots. • With out roots the plants would die. • There are a few kinds of plants that can grow in soil. • Sand doesn’t retain water. Research
Independent variable: What the plant is planted in (soil or sand). • Dependent variable: How fast many leaves plant grows. Definitions Independent Variable: The independent variable is what is changed in the experiment. Dependant Variable: What happens as a result of the independent variable. • Constant variables: Amount of water, amount of sunlight, same temperature, same size jiffy pots, same type of plant, and same amount of seeds. • Control group:The plants in soil. Variables
The plant will grow faster in soil because sand doesn’t retain water. Hypothesis
1 bag of potting soil 1 bag of sand Water Metric measuring cups 6 styrofoam cups One metric ruler A pen Some pieces of paper Seeds Marker. Materials
Step 1: Gather materials. Step 2: Label the Styrofoam cups “A1” “A2” “A3” “B1” “B2” and “B3”. Step 3: Put 110 grams of potting soil into the “A” styrofoam cups. Step 4: Put 110 grams of sand into the “B” styrofoam cups. Step 5: Put the styrofoam cups on a table outside, for sunlight access. Step 6: Put four seeds in each of the cups. Step 7: Each day come back to water the plants with 2 ounces of water in each cup. Step 8: Each day come back to record how many leaves are on each plant. Step 9: After the three weeks are up, analyze and graph the data. Step 10: Communicate Results. Procedure
In cup B2 Photos Day 1 B1 B3 A2 Day 10 B2 A3 A1 A2 B3 B1 A1 A3 B2
In conclusion, I’ve learned that if you use to much water in the soil it will drown the seeds. I have also learned that if the sand is compact and held together with water, the seeds will sprout. Conclusion
I think why my experiment didn’t go as planned was because I didn’t start early enough. Another reason could be that I used to much water. Possible Experimental Errors
I would start earlier and let the plants grow longer. I would also only use 1 oz of water to water the plants. Applications and Recommendations
"Do Plants Grow Best in Ground Soil or Potting Soil? | Garden Guides." Garden Guides, Your Guide to Everything Gardening. Web. 24 Jan. 2011. http://www.gardenguides.com/127982-plants-grow-ground-soil-potting-soil.html Hershey, David. "Re: Do Plants Grow Better in Soil or Sand? Why?" MadSciNet: The 24-hour Exploding Laboratory. Web. 24 Jan. 2011. http://www.madsci.org/posts/archives/2000-09/969410800.Bt.r.html "How Plants Grow." Think Quest. Web. 24 Jan. 2011. http://library.thinkquest.org/3715/root2.html Personal interview. 25 Jan. 2011. "Plants Suited To Sandy Soils." Discover Loch Sport, a Gateway to the Gippsland Lakes and Ninety Mile Beach. Web. 24 Jan. 2011. http://www.lochsport.com/environment/plants.html Royston, Angela. "Many Kinds of Plants." How Plants Grow. Chicago, IL: Heinemann Library, 1999. 4. Print. "Soils and Fertilizers." Web. 25 Jan. 2011. http://cals.arizona.edu/pubs/garden/mg/soils/index.html Works Cited
