Standard Science Primary 4 Energy

When a bottle of cold milk is placed in a bowl of hot water, the level of milk in the straw attached to the bottle rises. This is because the milk __________.

A gained heat and expanded
B lost heat and contracted
C lost heat and expanded
D gained heat and contracted
Show Worked Solution

Worked Solution

Step 1: The hot water transfers heat to the cold milk. Step 2: The milk gains heat and increases in volume (expands). Step 3: The only way for the expanded milk to move is up the straw.

Correct answer: gained heat and expanded

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