| Explore | What we know about plants from our experiences outside of school is that plants require a certain amount of light and water due to our gardening experiences at home. Alejandra knows plants require proper care so they plants grow. We also know they go through photosynthesis, which is when plants will start to take in their light sources and be affected by them. |
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| Research Question | Our class essential question is: How can agronomy feed the world? Our specific question to our experiment is: Under what type of light do radish grow more efficiently? A lesson we did in class that discussed light and light quality necessary for plant growth is what led us to this question. |
| Predictions | We believe that under red light, radishes will grow more effectively than under any other colored light alternatives. We believe that under the green light, the radishes won't grow successfully due to plants reflecting the green light. We also think that under the blue light, the plant will grow well, but succeed far more under the red light. |
| Experimental Design | Materials: - Light bulbs and lamps - Red light - Blue light - Green light - Under a grow light tower - Out in the sun (control) - Big boxes to provide coverage for maximum colored-light exposure (the insides of the boxes covered in aluminum foil) - [Planted in] black containers Procedure: Denise will plant about 5 radish seeds in a black container. Janessa will get the lamps ready and put the plants under the light. Alejandra will lightly water them periodically (every day we have first period- 4x a week at 8:40 am) with tap water—80 ml. Janessa will measure the plants when they start to sprout. We will document when they start sprouting, respectively to its source of colored light, and record their height. We will also document the constant variables in the experiment such as plants' photoperiods, watering days and times, and temperature of the room. Other variables we will also observe (for qualitative data) the color change of the leaves, the number of leaves, and the leaf growth compared to the radish. As for quantitative data, we will also measure the plants when they start sprouting. |