Water Weed Simulation
Name_____________________________ _____
http://www.saddleworth.oldham.sch.uk/science/simulations/waterweed.htm
COMPLETE THE FOLLOWING 8 RUNS WITH THE WATER WEED SIMULATION. THE
LAST 2 RUNS ARE YOUR OWN CHOICE.
COMPLETE THE FOLLOWING TABLES.
Table I. The effect of Carbon Dioxide on Photosynthesis
Run #
CO2
Light
Filter
1
0.00
10.0
White
2
10.0
10.0
White
Table II. The effect of the amount of Light on Photosynthesis
Run #
CO2
Light
Filter
3
10.0
2.0
White
4
10.0
10.0
White
Table III. The Effect of the color of the Light on Photosynthesis
Run #
CO2
Light
Filter
5
10.0
10.0
Filter
6
10.0
10.0
Blue
7
10.0
10.0
Green
8
10.0
10.0
White
9
10.0
10.0
Red
Table IV. Two Runs Chosen by YOU
Run #
CO2
Light
9
10
Filter
Bubble count
Bubble Count
Bubble Count
Bubble Count
1. What the plant. What is the name of the bubbles coming out of the plant?
_____________________
2. Which color light bulb has the lowest amount of gas coming out of the plant?
_____________________ Why do you think this
happened?____________________________________________________________________________
3. During photosynthesis of this plant we can see the bubbles of ______________ being
released, but we cannot see the ____________________ being produced by the plant.
4. If you wanted to maximize photosynthesis, what would you give this
plant?_______________________________________________________________________
5. If you wanted minimum photosynthesis, what would you give this plant?
____________________________________________________________________________
6. Write the equation for photosynthesis: Put what the plant needs on the left and
what it produced on the right.
ILLUMINATION PHOTOSYNTHESIS
NAME________________________________________
Click on the Illumination Photosynthesis on the right. Go first to the cycle, then the
atomic shuffle, then the 3 puzzlers
http://www.pbs.org/wgbh/nova/nature/photosynthesis.html
THE CYCLE
1. The girl is giving the plant__________________ gas.
2. The plant is giving the girl______________________ gas.
3. The energy source of photosynthesis is_______________________________
4. What are the blue molecules called that the plant needs? ____________________________
ATOMIC SHUFFLE
5. Draw a diagram of a water molecule.
6. How does the plant get water?
7. Where does oxygen gas come from?
8. The hole in the leaf called the ___________________ allow the gas ___________ to enter.
9. Where does carbon dioxide come from?
10. The big sugary molecule made in photosynthesis is called_____________________
11. Its chemical formula must be C_____ H________ O_________ ( count)
12. Write a balanced equation for photosynthesis.
THREE PUZZLES
13. Could a tree produce enough oxygen to keep a person alive?
14. How could you keep a plant alive without sunlight?
15. What do plants use oxygen for?