| Explore | We have grown gardens before and understand the importance of taking care of plants, like watering them and giving them light. We didn't know much about cellular respiration before our work in class, like how photosynthesis doesn't always need to take place for cellular respiration. Why do some plants change so drastically when a change occurs compared to others? |
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| Research Question | We wanted to test how carbonated affected photosynthesis in an elodea plant. We wanted to see how the color of BTB would change. We thought that since carbon dioxide is so important to photosynthesis, using carbonated water would have a big impact. |
| Predictions | Our predicted outcome was that there would be an excess of CO2 in the water, and that the BTB would not turn blue. We thought this because we knew there would be a lot of CO2, and our hypothesis was supported by our findings. |
| Experimental Design | Two tubes with elodea plants, 1 with distilled water and 1 with (club soda) carbonated water Two tubes without plants, 1 with distilled and 1 with carbonated (club soda) water Label each tube Each tube gets 18mL of their designated water type Each tube gets 1mL of BTB Put foil over every tube, secure with tape Put every tube under the light for 48 hours |
| Conclusion | The experiment supported the hypothesis. The tube was a different color of yellow after 48 hours, showing that there was a change. The water was still yellow, showing that there might have been an excess of CO2. |
| Investigation Theme | POS |
| Grade Level | High School Students (Grades 9,10,11,12) |
| Teacher Name | Mary Leonora Eldredge Sandbo |
| School Name | Des Lacs Burlington High School |
| Session | Fall 2023 |
| About this Project | I feel that the planning that Project 3 (Garden Badger) did for this session showed good reasoning skills. I liked that they went a step further to determine whether/how what they were investigating actually affected the experimental condition without plants to provide a point of comparison. This is important in designing an experiment, and in general scientific reasoning. -- Renate Wuersig, Mentor |
