What are three additional things Oliver does to make it a fair test?
Understand the Problem
The question is asking for three additional practices that Oliver should follow to ensure a fair test in his experiment regarding burning food. It assumes a scientific context, focusing on controlled variables.
Answer
Always starts with cold water at 10°C, burns the same mass of food, keeps the burning food the same distance from the test-tube.
The three things are: always starts with cold water at 10°C, burns the same mass of food, and keeps the burning food the same distance from the test-tube.
Answer for screen readers
The three things are: always starts with cold water at 10°C, burns the same mass of food, and keeps the burning food the same distance from the test-tube.
More Information
These steps ensure that the test remains consistent and that any changes in results are due to the manipulated variable, not other factors.
Tips
A common mistake is varying more than one factor, which can compromise the validity of the experiment.
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