In this Photosynthesis Virtual Lab, the question is how does the temperature of the beaker , affect the rate of bubbling oxygen. If the temperature increases, then the rate of bubbling oxygen is faster since hot temperatures help speed up reactions. We found out actually that in the table as we reached 40 degrees Celsius, the rate of oxygen was 2 seconds/bubble, and when we decreased temperature to 25 degrees Celsius, the rate of oxygen was 4 seconds/bubble, and 10 degrees Celsius causes rate of oxygen was 6 seconds/bubble.
The independent variable of the lab was the temperature and dependent variable was the oxygen bubbles, since the temperature helps cause the rates of oxygen bubbling. The control of the experiment was the Light Intensity, because it was constant the whole time and helping the oxygen bubble because until it the stopwatch was at 7 minutes, no bubbles came out, along with carbon dioxide, by the same reason, too.
Overall, what I learned in this lab was how to create an own experiment by testing the variables, to find which variable caused the change of rate of bubbling and Photosynthesis. By the rate of oxygen bubbling changing, it shows why Photosynthesis is changing since Photosynthesis produces oxygen. I found out that temperature with help of light intensity, were all needed to change the rate of bubbling. This help me relate to the concept of how photosynthesis can be a varying process like the oxygen bubbling in the experiment changing in its’ speed. It will help me apply to next time how to create a better own experiment since this is the 1st time in biology setting own variables to create an experiment.
Temperature (Celsius degrees)
|
Rate of Oxygen bubbles sec/bubble
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40
|
2
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25
|
4
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10
|
6
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