An experiment to prove your hypothesis.

★Imagine that you will do an experiment to prove your hypothesis. List the independent and
dependent variable for each experiment.
★List at least 5 control variables for each experiment.
Observation 1: Eggshells produced by female birds exposed to the pesticide DDT seem to be
thinner than the eggshells produced by other female birds.
Hypothesis: ______________________________________________________________
Independent variable: _______________________________________________
Dependent variable: ________________________________________________
Control variables: ________________________________________________




Observation 2: Trees in areas with acid rain seem to be shorter.
Hypothesis: ______________________________________________________________
Independent variable: _______________________________________________
Dependent variable: ________________________________________________
Control variables: ________________________________________________




Observation 3: Seagulls covered with oil (from an oil spill) do not look as if they could fly.
Hypothesis: ______________________________________________________________
Independent variable: _______________________________________________
Dependent variable: ________________________________________________
Control variables: ________________________________________________


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