| Explore | In class we learned that photosynthesis for plants needs either water or light to grow. We were curious if salt water would make the plants grow faster. |
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| Research Question | our research question is will using salt water instead of tap water change the rate of photosynthesis |
| Predictions | our prediction for this question was that using salt water would change the rate of photosynthesis. |
| Experimental Design | we will be using 125 ml of water with 1 tsp of salt and 1 tsp of backing soda into a cup. we will use another cup with just 1 tsp of backing soda. we will be measuring the distance from the light to the edge of the cups, it will be 2 inches away. we will be measuring the rate of photosynthesis so we will be using spinach leaves and take the oxygen out of them using a syringe, we will use 11 spinach disks per cup in case 1 doesn't sink. we will measure the rate of photosynthesis every minute |
| Conclusion | Our data shows putting salt in the water causes photosynthesis to occur faster. The spinach disk rose faster in the salt water then just the baking soda water. |
| Investigation Theme | POS |
| Grade Level | High School Students (Grades 9,10,11,12) |
| School Name | Ottawa Township High School |
| Session | Fall 2018 |