soil or sand biology emily wood. do plants grow faster in soil or sand?
TRANSCRIPT
PROJECT OVERVIEW
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.
RESEARCH
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.
VARIABLES
Independent variable: What the plant is planted in (soil or sand).
Dependent variable: How fast many leaves plant grows.DefinitionsIndependent 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.
MATERIALS
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.
PROCEDURE
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.
DATA/OBSERVATIONS (ANALYZES)
1 2 3 4 5 6 7 8 9 100
0.5
1
1.5
2
2.5
3
3.5
4
4.5
Leaves on the Plants
A1A2A3B1B2B3
Days
Pla
nt
Leaves
CONCLUSION
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.
POSSIBLE EXPERIMENTAL ERRORS
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.
APPLICATIONS AND RECOMMENDATIONS I would start earlier and let the plants
grow longer. I would also only use 1 oz of water to water the plants.
WORKS CITED "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