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 10
A researcher is testing the effect of a new drug on blood pressure. The control group receives a sugar pill. What is the sugar pill called?
A scientist is testing a new fertilizer. She uses one group of plants with the fertilizer and another group without. What is the control group?
Describe the difference between a positive control and a negative control.
Describe what would happen if an experiment did not include a control group.
Explain the role of a control group in reducing experimental bias.
Explain what a placebo control is and why it is used in experiments involving humans.
Explain why a control group is important in a scientific experiment.
In a drug trial, what is the purpose of giving a placebo to the control group?
In an experiment testing the effect of fertilizer on plant growth, what would be an appropriate control group?
In an experiment, why might a scientist use both positive and negative controls?
Why is it important to keep all variables except the independent variable constant in an experiment?
Why is random assignment important when creating control and experimental groups?
