| Explore | |
|---|---|
| Research Question | What is the effect of calcium on radish photosynthesis rate? |
| Predictions | We think the plant with the .5% calcium will photosynthesize the most, this because the 2% of calcuim may be too much calcium, and the one with no extra calcium will not have the same amount of nutrients that the .5% is getting from the calcium. The .5% seems like it would the "sweet spot" because it is not too much or too little. |
| Experimental Design | Procedure 1. First we will get 18 radish seeds and put them inside their own plot of dirt 2. We would separate them into three groups, one: would be the control variable which would have the normal tap water, two: would be the experimental variable would have .5% calcium in the water, and three: would be another experimental variable and it would have 2% calcium in the water. 3. The first 6 seeds would be put in the same conditions as the second, and a third set of 6 seeds but the first set of seeds would have normal tap water, the second set of 6 seeds would have the .5% calcium in the water, and the third set of 6 seeds would have the 2% calcium. 4. All three sets of radish seeds will be watered lightly but several time a day, about every 2 to 3 hours until the soil stays moist 5. Then at the end of each day we will record each seeds growth, we will base the photosynthesis rate by the germination rate of the radish. We will do this for 3 weeks 7. At the end of the three weeks we will pull the radish out of the soil and measure how much it weighs What data will you measure and record? 1. We will measure how much each of the roots had grown at the end of three weeks by determining its weight What supplies or equipment would be necessary for investigating this question? 1. Radish seeds 2. Seed planter 3. Tap water 4. Calcium 5. Scale 6. Ruler 7. Laptop to record data 8. Excel or google sheets 9. Time |
| Conclusion | |
| Investigation Theme | POS |
| Grade Level | High School Students (Grades 9,10,11,12) |
| School Name | California Academy of Mathematics and Science |
| Session | Fall 2017 |