Sunflowers and Acid Rain Talent 21 Project By Jason Earle Date 5/2/12 Period 5

Introduction The purpose of this experiment was to find out whether the control or experimental teams plants would grow faster. The control in this experiment was the tap water and variable in this experiment was vinegar water.

Materials Plastic cup super growing pellets Triple beam balance scale Sunflower seeds Water Ruler Data sheet

Methods 1.Add super growing pellets to cup. 2.Add 3 tablespoons of water to expand. 3.Plant 3 seeds per cup. 4.Weigh cup on triple beam balance. Record weight. 5.Add tap water or vinegar water to cup. Weigh again and record data. 6.Cup will be placed under grow light. 7.Observe the container daily and note any indications of growth(by observations and measurement) and compare to other containers in the experiment. While observing indicate any special care given to the plant. (Did you need to add more or less water? Did you need to rotate the plant?) 8.Record observations, measurements, and comments in the plant growth diary. Once the plant begins to grow, you will need to draw a detailed picture of the plant including the appearance of leaves and stems. 9.Each day, repeat steps 3 through 8.

Scientific Method Ask a Question State Your Hypothesis Identify Control & Variable Test Your Hypothesis Collect & Record Your Data Interpret Your Data State Your Conclusion

Ask a Question The purpose of this experiment was to find out if sunflower seeds would grow faster with tap water or vinegar. My question is will the seeds with vinegar grow faster then the seeds with water?

State Your Hypothesis If I plant a sunflower seed I would keep it in the sun light, water and good soil. I would not use vinegar because I think your plant would die if you use vinegar.

Identify Control & Variable What my team did was use tap water and we changed how much water we used to a little bit more water then we used last time with are plant, and it led to less growth.

Test Your Hypothesis My hypothesis was if we used tap water it would make the seed grow faster then the vinegar water.

Collect & Record Your Data DateDry Wt.Wet Wt.Difference HeightNotes day 159.4g99.1g39.7gnone day 291.4gno water 91.4gnone day 372.3g82.1g9.8gnone day477.8g80.3g2.5gnone day g70.4.5g14.8.0gnone

Interpret Your Data The results showed that my plant didn’t grow as fast due to no sun light and too much water. As part of this experiment there may have been variables or scientific errors like no sun light and people putting their fingers in the plant.

State Your Conclusion The results of this lab did support the initial hypothesis. Some things that were learned from this experiment were some times plants don’t grow. This experiment could be extended in the future by using more water and sun.