Neville is testing a hypothesis through experimentation. He believes that raising the temperature difference between two water samples will lead to stronger circular currents when the samples are mixed together. Which of these actions would be considered a mistake in Neville’s experiment?

A. He measures the strength of each current using the same flow meter.

B. He randomly varies the volume of hot and cold water across his trials.

C. He reruns the experiment after fixing calibration problems with his thermometers

D. He uses glass containers to hold the water samples instead of plastic ones.

C. He states his hypothesis prior to beginning any of his experimental trials

Experiments in science need to be well regulated. The impact of the independent variable on the dependent variable is typically closely scrutinised in scientific experiments. Each time a variable is changed, the impact on the other variables is tracked.

Neville's experiment's decision to arbitrarily change the amount of hot and cold water throughout his experiments will be seen as an error.

learn more about Neville's experiment's here:

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