Standard Science Primary 4 Energy

Beaker A contains 100 ml of water at 80°C. Beaker B contains 500 ml of water at 80°C. Which statement is true?

A Beaker B has more heat energy.
B Beaker A has a higher temperature.
C Both have the same amount of heat energy.
D Beaker A has more heat energy.
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Worked Solution

Step 1: Temperature is the measure of hotness (both are equal). Step 2: Heat energy depends on the quantity of matter and temperature. Step 3: Since Beaker B has more water (more matter) at the same temperature, it has more heat energy.

Correct answer: Beaker B has more heat energy.

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