Leaf CutoutsIn this experience, I was able to indirectly show the process of photosynthesis and cellular respiration in a plant’s leaves and how plants use energy from cellular respiration to do work. My cup of mix baking soda and dish soap water started out with leaf cutouts at the bottom. After it was set under directly, the leaves slowly floated to the top. This can explained because of the energy transfer from the light source to allow the leaves to perform cellular respiration through photosynthesis.
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Questions
Why do you take the measurement from the disc that is from the halfway (1/2) mark? Why not record the first or last disc to float?
Measuring with the median of the sample better represents the whole data than using the first or last disc to float. The median would be more useful to understand the net rate of photosynthesis.
Would you trust the results from the whole class over just your own observation? Why?
I would trust the results from the whole class over just my own observation. Results from the whole class is an accumulation of many test runs, whereas, my own observation is based on one success attempt; replication is better. Many factors can affect the results, such as distance to light source, specific amount of baking soda or dish soap add, etc. Results from the whole class would vary depending on different factors, in which could then be compared and analyzed further.
How could you improve the design of this experience to get a more conclusive result?
I would improve the design of this experience by testing multiple variables that may affect the results. Aside from the controlled variable, other variables would be: the amount of baking soda, the distance of the light source to the cup, different leaf samples, and type of light (fluorescent, LED, etc.).
Measuring with the median of the sample better represents the whole data than using the first or last disc to float. The median would be more useful to understand the net rate of photosynthesis.
Would you trust the results from the whole class over just your own observation? Why?
I would trust the results from the whole class over just my own observation. Results from the whole class is an accumulation of many test runs, whereas, my own observation is based on one success attempt; replication is better. Many factors can affect the results, such as distance to light source, specific amount of baking soda or dish soap add, etc. Results from the whole class would vary depending on different factors, in which could then be compared and analyzed further.
How could you improve the design of this experience to get a more conclusive result?
I would improve the design of this experience by testing multiple variables that may affect the results. Aside from the controlled variable, other variables would be: the amount of baking soda, the distance of the light source to the cup, different leaf samples, and type of light (fluorescent, LED, etc.).