Sunflowers and Acid Rain Talent 21 Project By: Gavin Henderson Date _________ Period ________

 The purpose of this experiment was to find out the effect of acid rain.  The control in this experiment was the tap water.  The variable in this experiment was vinegar water. Introduction

Materials  Materials  Plastic cup  super growing pellets  Triple beam balance scale  Sunflower seeds  Water or 10% vinegar 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.

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

 The purpose of this experiment was to find out the effects of the acid rain on the sun flower.  My question: Will acid rain effect plant growth. Ask a Question

 If I plant a sunflower seed it will grow taller then the acid rain sunflower. State Your Hypothesis

 The control is tap water. Identify Control & Variable

 If I add tap water to my sunflower seed, then it did not grow because we might of put to much water. Test Your Hypothesis

 DateDry Wt.Wet Wt.Difference  Day g98.8 g85.1 g  Day g87.4 gno diff  Day g70.8 g.4 g  Day g70.6 g.7 g  Day g73.6 g6.0 g  Day g70.8 g.10 g  Day g86.7 g2.6 g Collect & Record Your Data

 The results showed that the plant did not grow.  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 not enough water. Interpret Your Data

 The results of this lab did not support the initial hypothesis I think its because we did not give it much water. Some things that were learned from this experiment were I found out that acid rain grows faster This experiment could be extended in the future by State Your Conclusion