Standard Science Primary 4 Energy

When a balloon is placed in a freezer, it becomes smaller. This is because the air inside the balloon __________.

A turned into a liquid
B escaped from the balloon
C gained heat and expanded
D lost heat and contracted
Show Worked Solution

Worked Solution

Step 1: The freezer is colder than room temperature. Step 2: The air inside loses heat to the surroundings. Step 3: Losing heat causes gases to contract (occupy less volume).

Correct answer: lost heat and contracted

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