1. 1.2 Scientific Method

2. Initial Observation Use your senses to observe
See, hear, touch, taste, smell, etc.
Can also use tools to measure
Temperature, length, volume, etc.

3. “What is the effect of…”
State the Question
“What is the effect of…”

4. Hypothesis
“If…then…” If producing oxygen bubbles in photosynthesis is related to light color, then green light will increase photosynthesis oxygen bubbles to form.

5. Prediction
Hey, I think that is the same think as hypothesis…so let’s just skip this one.

6. Experiment Independent Variable -what you change
goes on the X-axis of the graph
Dependent Variable -what changes as a result of what you did – goes on the Y-axis of the graph

7. Independent Variable? Dependent Variable?

8. Experiment
Constants-all the things in the experiment that stay the same
In the yeast lab:
same size test tubes
same size rubber tubing
same yeast type
same amount of sugar

9. What constants?

10. Experiment
Control – the part of the experiment that does not have the independent variable in it
In our yeast lab, it could be the room temperature set up

11. Record the data Experiment graphs charts video write observations
measurements

12. Agree or disagree with the hypothesis
Conclusion
Agree or disagree with the hypothesis
The green light did not produce the most oxygen bubbles.

13. NO food or drink in the lab
Remember
NO food or drink in the lab