Planting Science - Projects: Ameoba Sisterz
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Ameoba Sisterz

Project by group hhedoshingletonfall2017

Explore We learned that plants perform both photosynthesis and cellular respiration. We now know how plants use stored sugars from photosynthesis to grow new leaves in the spring.
Research Question We want to test the color of light's effect on the rate of photosynthesis. We knew that light is essential to photosynthesis, and we wondered if some light works better than others.
Predictions We think that under the black light, the rate of photosynthesis will be slower because it's not as bright as normal light.
Experimental Design Variables Independent : Color of light Dependent : Number of leaves floating (Rate of photosynthesis) Control: Temperature, intensity of light, time under light, type of leaf, amount of water Question What is the effect of color light on the rate of photosynthesis? Hypothesis The blue light will have the greatest rate of photosynthesis. Materials: - - - - - - - - - - Pre lab 1. 2. 3. 4. 5. 4 colored lights (blue, green, red, white) 4 styrofoam cups of water sharpie 4 spinach leaves hole punch 1⁄4 tsp baking soda graduated cylinder 4 syringes paint brush Dishsoap protocol: Label 4 styrofoam cups A, B, C, D. In a beaker, measure 600mL of water. Measure in 1⁄4 tsp of baking soda and mix with paintbrush. Measure in five drops of soap and mix With the hole puncher, punch 50 holes out of the spinach leaves. Protocol: 1. Using graduated cylinder, fill each the 4 cups with 100mL of water. 2. Put ten leaf pieces in each syringe, labeling syringe A, B, C, D. 3. Lay syringe on its side, and push plunger in as far as possible without crushing the leaves. 4. Pull up 6 mL of water from corresponding cups, and push back down, until a small bubble of water appears at end of syringe. Elle, Anosha, Josie and Annalise 5. Place finger over end of syringe and pull back on plunger, creating a vacuum, and shake. Release plunger THEN finger. 6. Repeat until all leaves sink within the syringe 7. WITHOUT TURNING LIGHT ON, Put cup A under blue light, cup B under green light, cup C under red light, and cup D under white light. 8. At same time put leaves from corresponding syringes to cup. Poke down floating leaves with end of paintbrush. 9. Turn all lights on and record data on how many leaf pieces are floating for ten minutes, recording every 60 seconds.
Conclusion
Investigation Theme POS
Grade Level High School Students (Grades 9,10,11,12)
School Name Holland Hall Episcopal Diocese of OK
Session Fall 2017

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NSF_Logo.jpg This material is based upon work supported by the National Science Foundation under Grant #2010556 and #1502892. Any opinions, findings, and conclusions or recommendations expressed in this material are those of the author(s) and do not necessarily reflect the views of the National Science Foundation.

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