1. Sunflowers and Acid Rain Talent 21 Project By : Brianna Lawson Date 5/1/12 Period :5

2. Introduction  The purpose of this experiment was to find out …if tap water or vingar water would grow 3 sunflower seeds.  The control in this experiment was tap water  The variable in this experiment was vinegar

3. Materials  Plastic cup  super growing pellets  Triple beam balance scale  Sunflower seeds  10% vinegar water  Ruler  Data sheet

4. 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.

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

6. Ask a QuestionAsk a Question  The purpose of this experiment was to find out … (Include background information about requirements for plant growth and plant needs- your textbook would be a good place to begin gathering background information. Include information about the plant or the variable you used to help make your plant go and its importance in this experiment.  My question: _Will the seed grow faster than in the vinegar water?

7. State Your HypothesisState Your Hypothesis  If I plant a sunflower seed, it will grow slower, because the vinegar damages the seed. I t damages the seed because its acid rain instead of regular tap water. Regular tap water makes it better to grow because my group used different waters.

8. Identify Control & VariableIdentify Control & Variable  The control of my experiment was tap water.  The variable of my experiment was vinegar.

9. Test Your HypothesisTest Your Hypothesis  If I add vinegar water to my sunflower seed, then it will grow faster because it would help the plant grow faster./

10. Collect & Record Your DataCollect & Record Your Data DayBefore liquid After liquid Differen ce Day 164.491.727.3 Day 283.888.44.6 Day 367.977.010.1 Day 470.380.09.7 Day 569.576.06.5 Day 668.577.59.0

11. Line graphLine graph

12. Interpret Your DataInterpret Your Data  The results showed that the vinegar is not good water for this plant. 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 using both waters. Scientific errors that could have occurred and affected the results include wrong water.

13. State Your ConclusionState Your Conclusion  The results of this lab did not support the initial hypothesis This was the outcome because the plant was watered with vinegar water. Some things that were learned from this experiment were that it is hard for sunflowers to grow in vinegar water. This experiment could be extended in the future by using more water, different water, less water, different soil.