Water Weed Simulation
Introduction: In this simulation, you will be looking at the production of oxygen as a plant photosynthesizes. This procedure can be accomplished by placing elodea plants in water with baking soda to provide carbon. The plant can then be exposed to varying intensities and colors of light. Oxygen is measured in the number of bubbles
produced by the plant. This simulator addresses three factors that influence the rate of photosynthesis. Carbon dioxide availability, light intensity, and light color can all be adjusted in the simulator to determine how each of the factors affects the rate of photosynthesis.
Affect of Light Color on the Rate of Photosynthesis: Set the simulator to 6.0 Light Level, and 6.0 CO2 Level. Adjust the colors to complete the table.
Light Color
Red
Blue
Green
Colorless
Number of Bubbles (Light: 6.0 & CO2: 6.0)
13 Bubbles
15 Bubbles
6 Bubbles
22 Bubbles
1. Based on the data, what color of light results in the fastest rate
of photosynthesis? Propose an explanation for these results.
> Based on the data, colorless light results in the fastest rate of photosynthesis. The more bubbles we see, the more photosynthesis is happening.
Affect of Light Level on Photosnythesis: Set the simulator to colorless light CO2 level to 6.0. Make adjustments to the level of light to complete the data table.
Light Level
1.0
2.0
3.0
4.0
5.0
6.0
7.0
8.0
9.0
10.0
Number of Bubbles (Light: Colorless & CO2: 6.0
4
8
11
14
17
21
24
26
27
30
2. Based on the data, what light level results in the fastest rate of photosynthesis? Propose an explanation for these results.
> Based on the data, 10.0 results in the fastest rate of photosynthesis. The more bubbles we see, the more photosynthesis is happening.
Affect of CO2 Levels on Photosynthesis: Develop an experiment to test how the level of CO2 affects the rate of photosynthesis. Construct a data table in the space below. that shows the data you collected. Make sure to include information such as the color of light, light intensity, level of CO2 and the amount of bubbles produced. (Use the previous experiments as a guide)
produced by the plant. This simulator addresses three factors that influence the rate of photosynthesis. Carbon dioxide availability, light intensity, and light color can all be adjusted in the simulator to determine how each of the factors affects the rate of photosynthesis.
Affect of Light Color on the Rate of Photosynthesis: Set the simulator to 6.0 Light Level, and 6.0 CO2 Level. Adjust the colors to complete the table.
Light Color
Red
Blue
Green
Colorless
Number of Bubbles (Light: 6.0 & CO2: 6.0)
13 Bubbles
15 Bubbles
6 Bubbles
22 Bubbles
1. Based on the data, what color of light results in the fastest rate
of photosynthesis? Propose an explanation for these results.
> Based on the data, colorless light results in the fastest rate of photosynthesis. The more bubbles we see, the more photosynthesis is happening.
Affect of Light Level on Photosnythesis: Set the simulator to colorless light CO2 level to 6.0. Make adjustments to the level of light to complete the data table.
Light Level
1.0
2.0
3.0
4.0
5.0
6.0
7.0
8.0
9.0
10.0
Number of Bubbles (Light: Colorless & CO2: 6.0
4
8
11
14
17
21
24
26
27
30
2. Based on the data, what light level results in the fastest rate of photosynthesis? Propose an explanation for these results.
> Based on the data, 10.0 results in the fastest rate of photosynthesis. The more bubbles we see, the more photosynthesis is happening.
Affect of CO2 Levels on Photosynthesis: Develop an experiment to test how the level of CO2 affects the rate of photosynthesis. Construct a data table in the space below. that shows the data you collected. Make sure to include information such as the color of light, light intensity, level of CO2 and the amount of bubbles produced. (Use the previous experiments as a guide)
4. Based on the simulation experiments, what factors can affect the rate of photosynthesis in a plant? How do you
know?
know?
5. Write the equation for photosynthesis.
Equation is shown below .
Equation is shown below .
6. What are the bubbles you are measuring in this lab? Why do the bubbles tell you how fast photosynthesis is occurring?
- The bubbles that I'm measuring in this lab are from Carbon Dioxide. Besides the bubbles tell me how fast photosyntheis is happening depending on how many CO2 , sugars , H2o ,ect.
7. Why is it important that you keep two variables constant (such as light level and color) while you're testing how a third variable (CO2 Level) affects photosynthesis?
- It is important to maintain both variables constant so then, you will be able to have a more accurate answer besides you will appreciate better the difference between the experiments.
- It is important to maintain both variables constant so then, you will be able to have a more accurate answer besides you will appreciate better the difference between the experiments.
8. What settings can you put the simulator on to get the MAXIMUM rate of photosynthesis
- More CO2 as well the amount of light will give me more results of a maximum photosynthesis.
- More CO2 as well the amount of light will give me more results of a maximum photosynthesis.