| Explore | We know that plants have a optimal temp. for photosynthesis that is 20 degrees celsius. We also know that photosynthesis needs CO2 and H2O to get going. |
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| Research Question | We want to test the effects of temperature on the rate of photosynthesis. |
| Predictions | Prediction is that when the water the leaf disks are in water way colder than room temp ( 20 degrees celsius ) the rate of photosynthesis will be slim to none in the time span of 12 mins. |
| Experimental Design | Our plan is to take 100ml of H2O/ mix it with 1.1g of baking soda/ then figure out what temp you want to test first (our control is room temp water and we tested 3 different temps 3 times each)/then take 10 spinach disks ( hole punch spinach leaves) get a syringe (with flat top) put 10 disks into it and suck up the baking soda water/ then you are to make a vacuum inside the syringe by putting your finger over the hole in the syringe and pulling the pull thing back for 10 seconds 3 times/ the starts the timer for 12 mins and put your disks and vacuum water back into the 100ml of water and set them under a lightbulb/ record each minute how many disks are floating in the water/ when time is up repeat and continue the tests. |
| Conclusion | We claim that when water is colder than room temp, say 8 degrees celsius, the rate of photosynthesis is basically non-existent in a time span of 12 mins. |
| Investigation Theme | POS |
| Grade Level | High School Students (Grades 9,10,11,12) |
| School Name | South Doyle High School |
| Session | Fall 2017 |