Standard Science Primary 6 Energy

Siti wants to find out if the colour of a container affects how fast the water inside loses heat. Which variables must she keep the same for a fair test?

A Material of container and colour of container
B Colour of container and size of container
C Colour of container and initial temperature of water
D Size of container and initial temperature of water
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Worked Solution

Step 1: To conduct a fair test, only the independent variable (colour) should be changed. Step 2: All other variables that could affect the results must be kept constant. Step 3: Size of container and starting temperature of water both affect heat loss and must be the same.

Correct answer: Size of container and initial temperature of water

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