| Explore | What we know so far about plants is they all do photosynthesis. Photosynthesis is a process that the plants make the food they need to grow. We also know the inputs of photosynthesis are water, carbon dioxide and sunlight. The outputs for photosynthesis are glucose (sugar) and oxygen. We know a little bit about germination and how it's the little bit of energy to help a seed sprout. |
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| Research Question | How does the color of the light change the speed of germination? |
| Predictions | We predict that the yellow light plants will grow faster. This is our prediction because we think the yellow light will be the brightest produce the most energy for germination. |
| Experimental Design | We are going to have four different light colors, regular (white), yellow, red, and blue light. We will have three petri dishes (with 4 seeds inside each dish) under each light covered with a box. Everyday at sixth hour we will turn on the lights. Then the next morning during first hour we will turn the lights off (so the plants with have no light for about 7 hours). We will water the seeds for 10 ml each day and change out the paper towel every other day. Once our experiments over we will measure the growth of each plant. |
| Conclusion | The reason red light affects germination more is because of the it has the most absorption of chlorophyll. So that makes the light much more effective. Chlorophyll is important in the process of photosynthesis because chlorophyll is the part of the plant that absorbs sunlight to turn carbon dioxide into glucose and oxygen. |
| Investigation Theme | WOS |
| Teacher Name | Evelyn Gray |
| School Name | DeWitt Middle School |
| Session | Spring 2023 |