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Which Grows Better? Soil or No Soil?

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Chandler Hong

on 22 May 2013

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Transcript of Which Grows Better? Soil or No Soil?

Prezi by Peter Schmidt, Chandler Hong, and Ethan McGowan P.3 To Have Soil or No Soil? That is the Question. The Big Question: Do Plants
Grow Better with Soil or No Soil? Our group inferred that with the hydroponics method, the plant will grow faster, but will not survive as long, compared to using soil, which will make the plant grow slower, but end up much healthier and able to survive longer. This inference was mainly based on previous plant biology knowledge and common sense. Independent and Dependent Variables The independent variables of this plant experiment are the types of seeds used, the type of water used (tap water, distilled water), types of soil (different minerals in soil), and the locations of the plants (near the sun, away from the sun). The dependent variables of this plant experiment are, how fast the plant grows and the amount of water that the plant takes in. The control group, or the subjects that are used for comparison against the experimental subjects, was the plants that had soil in them, since we are testing whether plants would grow more efficiently using a hydroponic method, rather than the tradition pot and soil method. Materials Typically, most house plants are grown
in an environment with ample amounts
of soil, but in just recently, people have started to towards growing plants with a method known as Hydroponics, in which soil is not used to grow the plant. Hypothesis (Prediction) Control Group Conclusion 4 Bean Seeds
Distilled Water
1 Plastic Bag (Cut in Half)
2 Small Plastic Cups
Potting Soil
2 Moistened Paper Towels
Adequate Amount of Sunlight (Of Course) Procedure 1. Put two fresh bean seeds into a soaked paper towel.
2. Put the two wrapped paper towels in each of the plastic bags.
3. Fill each of the plastic bags about halfway with distilled water.
4. Tape the two plastic bags to a window that get an ample amount of sunlight during the day. Procedure (Continued) 5. Acquire 2 plastic cups and fill them
both with the same amount of potting
6. Make a small hole in the soil of each
of the cups, and place the remaining
two bean seeds in the soil and cover
them up.
7. Water each of the cups with 1/4 cup
of distilled water everyday at 9:30 AM. Procedure (Continued) 8. Every two days, check plant growth with and without soil, and record the measurements.
9. Based on measurements, infer on whether no soil or soil grows plants more efficiently and effectively.
10. Share your results with your classmates (As we are doing now) Plants with Soil Plants Without Soil (Hydroponics) Day 1: 0 cm
Day 2: 0 cm
Day 3: 0 cm
Day 4: 0 cm
Day 5: 0 cm :(
Day 6: 0 cm :((
Day 7: 0 cm :'( Day 1: 0 cm
Day 2: 0 cm
Day 3: 0 cm
Day 4: 0 cm
Day 5: 0 cm :(
Day 6: 0 cm :((
Day 7: 0 cm :'( The experiment was most likely NOT successful because we believe that the bean seeds started off in a rough condition. The variables that arose from this dramatically affected our testing. This, with addition of the bean seeds drying out quickly, made the seeds not germinate and grow. If the bean seeds started off in a better condition and were watered more in a more suitable and plentiful environment, then they may have grown. Problems With The Experiment There were many variables that could have affected the results of our experiment some variables were:
When we were moving the bean seeds to the plastic cups, we might have damaged the seed, causing it to not grow.
The amount of sunlight on the days could have affected the amount of growth.
The water quality on each of the days could have differed, causing growth differentiation.
The humidity in the room could have also caused an unforeseen variable, because with high humidity, there is more moisture in the air, causing the soil to be more fertile, for longer periods of time.
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