| Research Question | do different types of light bulbs affect the rate of photosynthesis. |
|---|---|
| Predictions | Our hypothesis is if we use the LED light with 60 watts then it will affect the rate of photosynthesis because the brighter light energizes the photons inside the leaf chads and causes them to rise. |
| Experimental Design | This is a list of our procedure; step 1: turn the 60 watt fluorescent light bulb on and line the bucket with tin foil. step 2: measure 1 gram of baking soda and 100ml of water in a beaker and cut 12 leaf chads from spinach leaves with a hole puncher. step 3: pour the water into a cup then pour the baking soda into the water and stir it. step 4: place the chads into the syringe and perform the leaf flotation method. step 5: place the chads into the cup of water and baking soda then place the cup under the light and begin timing for 10 minutes. step 6: record the number of leaf disks that have risen every minute, for 10 minutes. step 7: repeat steps 1-6 with each light bulb (a fluorescent light bulb, a halogen light bulb, an LED light bulb, a black light, and an incandescent light bulb). |
| Conclusion | claim: the incandescent light bulb had the best rate of photosynthesis our hypothesis was wrong we think this because the incandescent light bulb rose the chads faster and was the hottest between the four bulbs. evidence: on average the incandescent light bulb had more leaf chads rise over a period of 10 minutes. |
| Investigation Theme | POS |
| Grade Level | High School Students (Grades 9,10,11,12) |
| School Name | West High School |
| Session | Spring 2019 |