Which is not a component of fair testing?, Only test one factor, Measure the effects on other variables, Control other variables, Test the hypothesis, What is the tested factor?, colour change of apples, liquid used on the apple, Sharpness of the knife to cut through apples, Amount of liquid to slow down colour change, What is the variable being measured?, The amount of liquid to slow down colour change, Time for the apple to change colour, Colour change of apples, Shape of apples, Which is not the controlled variable, Amount of liquid, The same apple is used so the time they expose to air are the same, Time for the apple to change colour, Freshly squeezed lemon juice, Which liquid can slow down colour change?, Lemon juice, Water.

Fair testing

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