1. Independent variable: type of fertilizer
2. Dependent variable: color of hydrangea flowers
3. Hypothesis: The
type of fertilizer changes the color of their hydrangea flowers.
4. Control group: One bush gets no fertilizer.
This bush is their basis of comparison on what changes the
type of fertilizer have on different bushes.
5. Experimental group: 9 bushes where every bush gets 3 cups
of fertilizer, but each receiving a different brand.
Since there are 10 hydrangea bushes and 1 of these is the
control group, the rest are experimental groups.
6. Constants: - Variables that are the same all throughout the experiment.
* Planted in the same yard with the same type of soil.
* All bushes receive morning sunlight and no afternoon
sunlight
* All bushes are watered the same amount every other
morning.