Photosynthesis Virtual Lab

What is light intensity? How does it affect photosynthesis?

- Light intensity refers to the luminous power of a light source and it is usually measured in candelas.

-This is the strength of light as transmitted from a source of light.

-Some of the more common measurements include radiant intensity and luminous intensity. At low light intensities, if the light intensity is increased, the rate of photosynthesis increases.

-This is because light excites chlorophyll molecules, providing the energy for the production of carbohydrates. However, at higher light intensities, the rate of photosynthesis will level off.

8. Change color to red, press start, then record the color and amount of bubbles.

9. Change color to blue, press start, then record the color and amount of bubbles.

10. Change color to colorless, press start, then record the color and amount of bubbles.

11. Change CO2 to 0, hit start, then record the number of bubbles.

12. Change CO2 to 2, hit start, then record the number of bubbles.

13. Change the CO2 to 4, hit start, then record the amount of bubbles.

14. Change CO2 to 6, hit start, then record the amount of bubbles.

15. Change CO2 to 8, hit start, then record the amount of bubbles.

16. Change CO2 to 10, hit start, then record the amount of bubbles.

17. Change CO2 to 10, hit start, then record the amount of bubbles.

18. Change light intensity to 0, hit start, then record the amount of bubbles.

19. Change light intensity to 2, hit start, then record the amount of bubbles.

20. Change light intensity to 4, hit start, then record the amount of bubbles.

21. Change light intensity to 6, hit start, then record the amount of bubbles.

22. Change light intensity to 8, hit start, then record the amount of bubbles.

23. Change light intensity to 10, hit start, then record the amount of bubbles.

Data: Class Result

Analysis

Analysis

After performing this experiment, we found out that light affect photosynthesis the most.

According to our lab data, it shows that our hypothesis was correct.

The lower light intensity, the slower photosynthesis is which makes less bubble. The higher the light intensity, the faster photosynthesis takes place and it produces more bubble. The data also shows that when we increase the light intensity, the plant makes more bubble, and when there is no light, photosynthesis didn't take place. CO2 level and different color filter also affected photosynthesis but light has the most effect.

Research:

Procedures

Problem:

What factor has the greatest effect on photosynthesis?

Procedures

Photosynthesis Virtual Lab

Group 1

Period 5

Celine Lee

Michelle Fong

Alex Zhu

Ricky Lara

Dino Tolentino

Prediction

Research

Procedures

What wavelengths of light (color) does chlorophyll use?

Blue portion of the electromagnetic Spectrum, then followed by the red portion.

Hypothesis

If the more light intensity it is, then the rate of photosynthesis is going to increase.

If the less light intensity it is, then the rate of photosynthesis is going to decrease.

1. Open up your web browser.

2.Go to Mr. Spence's website and click on Water Weed Simulator. (This will take you the the website).

3. After you got to the website, set the speed to x5

4. Set both Light and Co2 level to 5.0

5. Press "start" to start the simulation

6. Change the filter color to green, press "start", then record the color and bubbles that were produced.

7. Change color to green, press start, then record the color and amount of bubbles.

-The lower the light intensity, the slower the rate of photosynthesis is.

-The higher the light intensity, the faster the rate of photosynthesis is.

Conclusion