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 7
A researcher is testing a new fertilizer. She uses three groups: one with no fertilizer, one with regular fertilizer, and one with the new fertilizer. Which group is the negative control?
A student is testing if salt affects the freezing point of water. She has one cup of pure water and one cup with salt. Which is the control?
A student tests if different colors of light affect plant growth. She uses red, blue, and green lights, and also grows some plants in normal white light. Which group is the control?
Describe how you would set up a control group in an experiment testing the effect of music on plant growth.
Describe the difference between a control group and an experimental group.
Describe what would happen if an experiment did not have a control group.
Explain what a positive control is in an experiment.
Explain why it is important to keep all variables except the independent variable the same in an experiment.
In an experiment testing the effect of fertilizer on plant growth, what would be a suitable control group?
What is an experimental control in a scientific experiment?
Why are experimental controls important in biology experiments?
