| Explore | We know that for bsic growth they need water, sunlight, and carbon dioxide. They give off oxygen and do phoposynthesis. We discovered that pH levels vary in diffreent areas od the world. Plants also do cellular respiration. How does pH effect plant growth? |
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| Research Question | We want to test how different pH levels effect plant growth. We know that plants need water to grow, so the level of pH could possiblt effect how it grows. |
| Predictions | The plants could die given the more acidic solution. PH is a factor when talking about enzymes and how the cells work, which then could potentially effect the growth of the plant. |
| Experimental Design | We will take Glycine max seeds and plant them in the same size pots and give them the same amount of soil. We will also give them the same amount of classroom light and keep them at the same temperature. We will assign certain plants to a pH and give each plant an equal amount of their specific sulfuric acid solution. We will get the sulfuric solution by adding sulfuric acid to water and measure it with a PASCO Probe. We will measure the height of the shoot with a ruler in inches about every other day. We are testing the different levels of pH on the height and growth of the shoot. |
| Conclusion | We can make no claim because our results are inconclusive. A possible explanation is that we didn't give them enough time to grow or we didn't measure enough. It doesn't support our claim. We could change the pH in the soil, we could have more extreme pH levels, and we could give them longer growing time. |
| Investigation Theme | WOS |
| Grade Level | High School Students (Grades 9,10,11,12) |
| Session | Spring 2019 |