Experiment 2: How does temperature affect oxygen production?
Complete a hypothesis by filling in the blanks:
If the temperature increases, then the dissolved oxygen level will __________________________ because _______________________________________________________________________________________.
Run the experiment by and collect the following data:
- Set the fish number to 0 and the plant number to 5. Leave the other variables at the default values (100% light intensity, white light).
- Set the temperature to 15 degrees.
- Record the starting and ending oxygen values.
- Repeat steps 3 and 4 for 20, 30, and 35 degrees.
- Calculate and record the DO difference.
Temperature (C) | Dissolved Oxygen Start | Dissolved Oxygen End | Dissolved Oxygen Difference |
15 |
|
|
|
20 |
|
|
|
30 |
|
|
|
35 |
|
|
|
Analysis:
How did the temperature affect the dissolved oxygen level?
