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Class 9 Science Exploration: Entering the World of Secondary Science Hypothesis and experimentationMedium

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A student investigates how stirring speed affects the time taken for salt to dissolve. Which factor should be kept constant for a fair test?

Answer and explanation

Correct answer: Amount of salt

Keeping the amount of salt constant allows only the effect of stirring speed to be tested. In exams keep other relevant factors constant.

Related tags

Controlled-Variable Stirring-Speed Salt-Dissolving Fair-Test Hypothesis And Experimentation Exploration: Entering The World Of Secondary Science Exploration Entering The World Of Secondary Science Science

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