Variables in Experiments
Biology ⇒ Scientific Inquiry and Experimental Design in Biology
Variables in Experiments starts at 6 and continues till grade 12.
QuestionsToday has an evolving set of questions to continuously challenge students so that their knowledge grows in Variables in Experiments.
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See sample questions for grade 9
A researcher wants to know if the amount of sugar in water affects the time it takes for yeast to produce carbon dioxide. What is the dependent variable?
A scientist is testing the effect of different amounts of salt on the boiling point of water. What is the dependent variable?
A student is testing how the amount of fertilizer affects the number of flowers produced by a plant. What is the independent variable?
A student wants to test if fertilizer affects the height of tomato plants. What is the dependent variable in this experiment?
Describe the difference between an independent variable and a dependent variable.
Describe what would happen if you changed more than one variable at a time in an experiment.
Explain why it is important to control variables in an experiment.
Explain why the dependent variable is important in an experiment.
In an experiment testing the effect of sunlight on plant growth, what is the independent variable?
In an experiment to test the effect of light color on plant growth, what is the dependent variable?
In an experiment to test the effect of temperature on enzyme activity, what is the independent variable?
In an experiment, a student changes the type of soil and measures plant growth. What is the independent variable?
In an experiment, a student measures the effect of different water temperatures on the time it takes for sugar to dissolve. What is the dependent variable?
