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Mod. 2 Lesson 8: Sheet 4 Variables Assessment Name: Suppose that you need to design another, very similar experiment, but this time you want to investigate the effect of using different strengths of hydrogen peroxide (maximum 10%) on the number of oxygen bubbles produced. Q1 What (variable) will you change? Can you suggest a range? Variable to change = Range to be used = Q2 What (variable) will you measure? Variable to measure = Q3 Which of the above is the independent variable and which is the dependent variable? Independent variable = Dependent variable = Q4 What (variables) will you keep the same and at what levels? The variables that I will keep the same and their levels are: