Standard Science Primary 4 Energy

Luke poured hot tea at 80°C into a ceramic mug. After 30 minutes, the tea was 30°C. Which statement is correct?

A The tea gained heat from the mug.
B The mug lost heat to the tea.
C The tea lost heat to the surrounding air.
D The surrounding air lost heat to the tea.
Show Worked Solution

Worked Solution

Step 1: Heat always travels from a region of higher temperature to a region of lower temperature. Step 2: The tea (80°C) is hotter than the surroundings (room temperature). Step 3: The tea loses heat until it reaches equilibrium with the room.

Correct answer: The tea lost heat to the surrounding air.

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