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 … (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. Include background information which you might have used to develop your hypothesis.) The control in this experiment was tape water The variable in this experiment was water type

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.

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 … (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 is why are groups plant is not growing with the water?

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

Identify Control & Variable What we did was use tap water and we changed how much water we used to little bit more. And it led to less growth.

Test Your Hypothesis If I add more water to my sunflower seed, then it will grow because of more water but might not because of less sun.

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 This is where you put your analysis. The results showed that (Describe general trends from your data) 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 (Describe any variables in your particular experiment.) Scientific errors that could have occurred and affected the results include (describe – for example used the wrong type of water )

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.