Photosynthesis Virtual Lab Honors (34 points GW)

Name: ____________________________________ Period ____________ Date: ___________________ Photosynthesis Virtual Lab Honors (34 points ? GW) Site 1: Glencoe Photosynthesis Lab bit.ly/pholab For this lab, you will need to type and print your response in the Journal Provided for Questions 1-4. For each question, please type your name on the first line of each response, then answer. Please wait to the end of your experiment to print. If you "X" out of the journal you will lose your work, please hand in responses with this packet. 1. Journal Questions #1 Make a hypothesis about which color in the visible spectrum causes the most plant growth and which causes the least. (3pts) 2. Collect data by changing the color of light. Test each type of plant and use the ruler to measure the height. Take an average for each plant at each color. (5 pts)

3. Journal Question #2 How did you test your hypothesis? (1pt) Which Variables did you control? (1pt) Which variables did you change? (1pt)

4. Journal Question #3 Analyze the results of your experiment. Did your data support your hypothesis? Explain (2pts)

5. Journal Question #4 What conclusions can you draw about which color in the visible spectrum causes the

most plant growth? Please write a claim and support with data. (2pts)

6. Omit Journal Question #5

Name: ____________________________ Period: ___ Date: ______ Site 2: Photolab weedsim2 This simulation allows you to manipulate many variables. You already observed how light colors will affect the growth of a plant, in this simulation you can directly measure the rate of photosynthesis by counting the number of bubbles of oxygen that are released. Propose hypotheses on how each of these variables effect the rate of photosynthesis (If...then...because). (2 points each)

a) Light intensity -

b) Carbon Dioxide-

c) Temperature-

1. Question: How Does Light Intensity Affect the Rate of Photosynthesis

Procedure: The purple slider can be used to change the light levels. You will count the number of bubbles at each level. The timer in the square box can be used to measure 30 seconds.

The relationship between light intensity and the rate of photosynthesis

Light Intensity 0 5 10 15 20 25 30 35 40 45 50

Number of Bubbles

*Based on the light tests, as you increase the intensity of light, what happens to the rate of photosynthesis? Provide data to support your answer. (2 pts)

2. Question: How Does Carbon Dioxide Affect the Rate of Photosynthesis?

Procedure: Set the light to its highest intensity (50), keep temperature at 25. Adjust the CO2 levels by clicking on the bottle.

The effect of different levels of Carbon Dioxide on the Rate of Photosynthesis

Amount of Carbon Dioxide Full CO2 Half CO2

Number of Bubbles

*Write a conclusion in a complete sentence that describes how the level of CO2 affects the rate of photosynthesis, provide data. (2 pts)

3. Question: How Does Temperature Affect the Rate of Photosynthesis?

Create a data table (use the ones above to help you) and input values for at least 3 Temperatures (10, 25, 40). Keep the light at 50 and CO2 at ?. Include Trials. Include all proper components in a data table. (5 points)

4. Please create an excel graph of your data for temperature and rate of photosynthesis, include all proper components. Please print and attach to packet. (4 points)

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