The number of flowers on different breeds of bushes in a greenhouse is recorded every week for two months.
Different breeds of bushes
Number of flowers
Recorded every week for two months
Independent Variable
Dependent Variable
Constants
You give four sunflowers different watering with either pure water or different concentrations of salt solutions. After a two-week period, the height of the sunflowers is measured.
Different watering- water or different concentrations of salt water
Height of sunflowers
Two week period
Independent Variable
Dependent Variable
Constants
Three redwood trees are kept at different humidity levels inside a greenhouse for 12 weeks. One tree is left outside in normal conditions. Height of the tree is measured once a week.
Height of redwood tree.
Greenhouse conditions, 12 weeks, height recorded once a week.
Different humidity levels.
Independent Variable
Dependent Variable
Constants
One tank of goldfish is fed the normal amount which is once a day; second tank is fed twice a day; and a third tank is fed four times a day during a six-week study. The fishes' body fat is recorded daily.
Results recorded daily, same kind of food, fish kept in tank, six week study.
Amount goldfish are fed per day.
Fishes' body fat.
Independent Variable
Dependent Variable
Constants