🌱 Part 1: Pre-Experiment Questions

1. What are the three main inputs (reactants) needed for photosynthesis?

Sunlight, water, and carbon dioxide

Oxygen, glucose, and chlorophyll

Water, soil, and air

Light, heat, and minerals

2. What are the two main outputs (products) of photosynthesis?

Water and carbon dioxide

Glucose and oxygen

Chlorophyll and sunlight

Energy and heat

3. Write your hypothesis for this experiment. What do you think will happen when the aquatic plant is placed under light versus in darkness?

🔬 Part 2: Data Collection

4. Record your oxygen bubble observations in the table below:

Light Condition - Number of bubbles per 4-minute interval:

Trial 1: _______ bubbles Trial 2: _______ bubbles Trial 3: _______ bubbles

Average: _______ bubbles

Dark Condition - Number of bubbles per 4-minute interval:

Trial 1: _______ bubbles Trial 2: _______ bubbles Trial 3: _______ bubbles

Average: _______ bubbles

5. What differences did you observe between the light and dark conditions?

6. Did your results support or refute your hypothesis? Explain why.

7. Why do you think oxygen bubbles were produced only (or mainly) under light conditions?

8. Complete the photosynthesis equation by filling in the blanks:

_____________ + _____________ + carbon dioxide → _____________ + _____________

9. Why is photosynthesis important for all living things, not just plants?

10. Write one question you still have about photosynthesis that you would like to explore further: