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WAEC Physics 2024 Paper

Question : 50

Total: 50

Solution:

Concept:

The graph shows how the volume of a fixed mass of water changes with temperature near its freezing point.

Explanation:

Water behaves unusually between

0^\circ\text{C}

and

4^\circ\text{C}

As water is heated from

0^\circ\text{C}

, it contracts instead of expanding.

This continues until

4^\circ\text{C}

, where water has its minimum volume and maximum density.

Above

4^\circ\text{C}

, normal expansion occurs and volume increases with temperature.

This special behaviour is called the anomalous expansion of water.

Answer:

D. anomalous expansion of water

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