Acid Rain By Ryan Souza Period 6 Mr. Leingang

Variables Responding variable: Growth of plant Manipulated variable: Amount of lemon juice Controlled variable: Type of plant Controlled variable: Amount of water

Problem How does the volume of lemon juice affect the growth of plants?

Hypothesis As I increase the volume of lemon juice then the plant with the most lemon juice will die because acid rain kills the cells of a plant.

Materials Lemon Juice 3 same plants Water 3 Spray Bottles

Procedure 1.Mix 25ml of lemon juice and water in 1 spray bottle and label it “A”. Mix 50ml of lemon juice and water in another spray bottle and label it “B” 2.Write down observations of plants before beginning. 3.Water each plant. 4.Spray bottle “A” on plant”A” 5 times. Spray bottle “B” on plant “B” 5 times. Spray water at plant “C” 5 times.

Procedure 5.Record observations everyday for the two weeks 6.Continue doing step 4 and 5 every day for two weeks. 7.Safety tips- none.

Growth of plants DayPlant with no lemon juice Plant with 25ml of lemon juice Plant with 50ml of lemon juice 0 Green leaves A yellowish leaf 5 Green leaves A yellow leaf 6 Green leavesA yellowish leafA brown leaf 7 Green leavesA yellow leafA decaying leaf

Growth of plants DayPlant with no lemon juice Plant with 25ml of lemon juice Plant with 50ml of lemon juice 8Green leaves2 yellow leaves1 brown leaf w/ holes 9Green leaves3 yellow leaves2 brown leaves w/ holes 101 yellowish leaf3 yellow leaves3 brown leaves w/ holes 111 yellow leaf3 yellow leaves4 brown leaves w/ holes 121 yellow leaf4 yellow leaves4 brown leaves w/ holes 132 yellow leaves5 yellow leaves5 brown leaves w/ holes 142 yellow leaves5 yellow leaves5 brown leaves w/ holes

Conclusion In conclusion, I measured how the volume of lemon juice affects the growth of plants. First, my hypothesis was as I increase the volume of lemon juice, then the plant with the most lemon juice will die because acid rain kills the cells of a plant. My hypothesis was correct. Second, my plant with no lemon juice had green leaves until day 9 and had two yellow leaves in the end. My plant with 25ml of lemon juice had green leaves until day 5 and had five yellow leaves in the end. My plant with 50ml of lemon juice had green leaves until day 3 and had five brown leaves with holes. Therefore I learned the more lemon juice, the worst the condition of the plant.