Question

Connor & Miguel want to investigate if the type of fertilizer changes the color of their hydrangea flowers. They select 10 hydrangea bushes & plant them in the same yard with the same type of soil. Every bush gets 3 cups of fertilizer, but each receiving a different brand. One bush gets no fertilizer. All bushes receive morning sunlight and no afternoon sunlight. All bushes are watered the same amount every other morning. After 4 weeks, the boys observe the color of the blooms on each bush. 1. Independent variable: 2. Dependent variable: 3. Hypothesis: 4. Control group: 5. Experimental group: 6. Constants:

Answer 1

Independent variable: Fertilizer.
Dependent variable: Colour of the flower
Hypothesis: The type of fertilizer used for cultivation affect the colour of the hydrangea flower.
Control group: The group that did not receive fertilizer.
Experimental group: the groups that receive fertilizer.
Constants: type of soil used, amount of sunlight allowed, amount of water used to wet the flower, duration of the experiment.