Standard Science Primary 4 Energy

Ravi placed a bottle of cold juice on a table. After 20 minutes, the juice felt warmer. Why?

A The coldness from the bottle moved to the air.
B The juice lost heat to the surrounding air.
C The table produced heat to warm the bottle.
D The juice gained heat from the surrounding air.
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Worked Solution

Step 1: Surroundings are warmer than the cold juice. Step 2: Heat flows from a warmer region to a colder region. Step 3: The juice gains heat and its temperature rises.

Correct answer: The juice gained heat from the surrounding air.

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