Experimental Controls
Biology ⇒ Scientific Inquiry and Experimental Design in Biology
Experimental Controls starts at 7 and continues till grade 12.
QuestionsToday has an evolving set of questions to continuously challenge students so that their knowledge grows in Experimental Controls.
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See sample questions for grade 8
Describe how a control group helps to eliminate bias in an experiment.
Describe the difference between a positive control and a negative control in an experiment.
Describe what a 'controlled variable' is in an experiment.
Explain what would happen if an experiment did not include a control group.
Explain what would happen if the control group accidentally received the independent variable.
Explain why a placebo is used in some experiments.
Explain why repeating an experiment with controls increases reliability.
In a drug trial, what is the purpose of giving the control group a placebo?
In an experiment, what is the group called that receives the variable being tested?
In an experiment, why is it important to record the results of both the control and experimental groups?
What is an experimental control in a scientific experiment?
Why is it important to have only one variable changed in a controlled experiment?
Why is it important to keep all variables except the independent variable the same in both the control and experimental groups?
