| Explore | I know that plants usually need light and water to grow. Some plants don't need as much water or sunlight as others. We have discovered that plants produce oxygen and sugar in photosynthesis. I wonder how some plants grow without light and/or without water. |
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| Research Question | What effect(s) do light and dark have on plants? It is fitting because we are currently studying plants and how they grow. |
| Predictions | Our predictions are that the ones in the light will produce cabon dioxide faster and the one in the dark will produce carbon but at a slower rate. |
| Experimental Design | Our plan is to do the leaf assay project but have a few cups in the dark and a few in the light. We had 4 cups in total. We had one light cup that we blew bubbles in for a minute and one dark cup that we blew bubbles in for a minute. Then we had one light and one dark that we did not do anything to. |
| Conclusion | In conclusion, plants undergo different processes depending on their environment and conditions. In sunlight, a plant goes through photosynthesis, which converts light and oxygen into carbon dioxide and glucose. In the dark, a plant goes through cellular respiration. In cellular respiration, the plant essentially goes through the process of photosynthesis but in reverse order. All cups in the dark had no leaf disks floating. The cup that was blown into (given more carbon) produced more oxygen in the light which caused all the leaf disks to float over time. |
| Investigation Theme | POS |
| Grade Level | High School Students (Grades 9,10,11,12) |
| Teacher Name | Bill Welch |
| School Name | Campus High School |
| Session | Fall 2023 |