Variables in Experiments
Biology ⇒ Scientific Inquiry and Experimental Design in Biology
Variables in Experiments starts at 6 and continues till grade 12.
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See sample questions for grade 6
Describe what a controlled variable is and give one example.
Describe why it is important to identify all variables in an experiment before starting.
Explain the difference between an independent variable and a dependent variable.
If you are testing how the amount of fertilizer affects the number of tomatoes produced by a plant, what is the dependent variable?
In an experiment testing the effect of temperature on the rate of a chemical reaction, what is the dependent variable?
In an experiment to test how sunlight affects plant growth, what is the independent variable?
In an experiment to test the effect of different types of soil on plant growth, what is the independent variable?
In an experiment where you test the effect of different amounts of water on seed germination, what is the dependent variable?
What could happen if you do not keep controlled variables constant in an experiment?
What is a variable in a scientific experiment?
What is the purpose of having controlled variables in an experiment?
Why is it important to only change one variable at a time in an experiment?
