What three things does Oliver do to make his experiment fair?
Understand the Problem
The question is asking to identify three measures that Oliver takes to ensure the experiment of burning food is fair. It involves understanding how to control variables in an experiment.
Answer
Same volume of water, same mass of food, same distance.
To make his experiment fair, Oliver uses the same volume of water, burns the same mass of food, and keeps the burning food the same distance from the test-tube.
Answer for screen readers
To make his experiment fair, Oliver uses the same volume of water, burns the same mass of food, and keeps the burning food the same distance from the test-tube.
More Information
Ensuring consistency in these variables helps control external factors, allowing accurate comparison of results.
Tips
Ensure all conditions except the tested variable remain constant to draw valid conclusions.
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