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Question 1 of 6
1 of 6
A pupil has test tubes of hot water covered in different colours of paper. He investigates whether colour affects the rate of infrared emission. Match each variable with its type in this experiment.
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control variable
dependent variable
independent variable
starting temperature of the water
temperature drop in a set time interval
colour of paper
The independent variable is the one that is changed, the dependent variable is the one that is measured and the control variables are the ones that stay the same