Sunflowers and Acid Rain Talent 21 Project By Andre Freire Date 5-1-12 Period 5

Introduction The purpose of this experiment was to find out how the sunflower seed grows in acid rain/ vinegar water and tap water. The control in this experiment was tap water The variable in this experiment was 10% vinegar water

Materials Materials Plastic cup super growing pellets Triple beam balance scale Sunflower seeds Water or 10% vinegar water Ruler Data sheet

Methods Add super growing pellets to cup. Add 3 tablespoons of water to expand. Plant 3 seeds per cup. Weigh cup on triple beam balance. Record weight. Add tap water or vinegar water to cup. Weigh again and record data. Cup will be placed under grow light. 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?) 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. 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 how tall the plant will be over the days of the project using tap water or 10% vinegar water My question: How tall will my plant grow over the period of the experiment

State Your Hypothesis If I plant a sunflower seed it will grow the most from the 3rd day to the end day of the project.

Identify Control & Variable In the project the control was the tap water and the variable in the project is the 10% vinegar water supposed to be like acid rain on the sunflower seed.

Test Your Hypothesis If I add tap water to my sunflower seed, then it will grow more than the sun flower in the 10% vinegar water because the vinegar water will act like acid rain.

Collect & Record Your Data

Interpret Your Data This is where you put your analysis. The results showed that the plant did not grow even with the tap water not the acid rain/ 10% vinegar water and that the dry Wt. stays in the some area the whole project the 60 to 90 ounces. As part of this experiment there may have been variables or scientific errors that could have affected the growth of the plants and the outcome of this experiment. The variables affecting the results may have been putting to much water in the cup or forgetting to weigh the cup before watering it. Scientific errors that could have occurred and affected the results include that our group put to much water in the cup on the first day so we didn't put any in on the second day might have had drowned the plant.

My plant on the final day

State Your Conclusion The results of this lab did not support the initial hypothesis because maybe the plant did not or got too much of the tap water. Some things that were learned from this experiment were that a plant takes a long time to grow and develop and that it takes a lot to grow that you can’t do all my yourself. This experiment could be extended in the future by taking the experiment over the summer to see how in does over a longer time.