Standard Science Primary 4 Energy

Siti placed a beaker of tap water over a Bunsen burner. She measured the temperature of the water every 2 minutes. Which of the following shows the correct change in the water?

A The water loses heat and its temperature decreases.
B The water loses heat and its temperature increases.
C The water gains heat and its temperature increases.
D The water gains heat and its temperature decreases.
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Worked Solution

Step 1: The Bunsen burner is a heat source. Step 2: When water is placed over a heat source, it gains heat. Step 3: Heat gain leads to an increase in temperature. Step 4: Therefore, the water gains heat and its temperature increases.

Correct answer: The water gains heat and its temperature increases.

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