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A student tests whether sugar dissolves faster in warm water. What is the dependent variable?

Answer and explanation

Correct answer: Time taken for sugar to dissolve

The direct answer is C, the time taken for sugar to dissolve. In an experiment, the independent variable is the factor deliberately changed, while the dependent variable is the result observed or measured. Here the student wants to compare warm water with another temperature, so temperature is changed. The student then measures how long the sugar takes to disappear into the water; therefore dissolving time is dependent on the changed temperature. Option A, water colour, is not the stated result. Option B, type of sugar, is a possible controlled or independent factor, but it is not the measured outcome here. Option C is correct because time is measured. Option D, beaker size, is a condition that should normally be kept the same. Exam cue: ask, “What result is being measured?” That is usually the dependent variable.

Related tags

Dependent VariableDissolving TimeSugarHypothesis And ExperimentationExploration: Entering The World Of Secondary ScienceExploration Entering The World Of Secondary ScienceScienceClass 9 Mcq

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