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A student asks how water temperature affects the rate at which sugar dissolves. Which factor is changed?

Answer and explanation

Correct answer: Temperature of water

The governing concept is the independent variable in a scientific investigation. The independent variable is the factor deliberately changed by the investigator to test its effect. In this question, the student changes the temperature of the water and observes how that change affects the dissolving rate of sugar. Therefore option B is correct. The dissolving rate would be the measured dependent variable, while factors such as the amount of sugar, container, stirring, and water volume should be kept controlled if the test is to be fair. The other options are not the factor identified in the question.

Related tags

Independent VariableExperimental DesignDissolving RateScientific Questions And ObservationsExploration: Entering The World Of Secondary ScienceExploration Entering The World Of Secondary ScienceScienceClass 9 Mcq

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