Key Stage 4 Photosynthesis Investigation

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Key Stage 4 Photosynthesis Investigation

Aim:

        The aim is to find out weather light intensity affects the rate of photosynthesis.

Prediction + Theory/Hypothesis:

        I predict that light intsinty (brightness) does affect the rate of photosynthesis. As the intensity gets higher I expect that the rate of photosynthesis will increase, until it can’t increase any more dew to limiting factors such as Co2 levels + temperature

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Plan/Method:

  1. Set up all equipment (see diagram).
  2. Set the voltage on the power pack and then turn on the power pack.
  3. Time for 1 min, then, when 1 min is up, turn off the power pack.
  4. Use the micro-burette and record the results.
  5. Do step 2-3-4 until you reach the maximum voltage (that you want)

Equipment List:

  • Glass block
  • Power pack
  • Light bulb
  • Glass beaker
  • Water (100ml)
  • Pond weed
  • Micro-burette

Diagram:

Results:

Conclusion:

        From my results I can conclude that ...

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