Standard Science Primary 4 Matter

Luke pushed an inverted glass into a basin of water. He noticed that the water level inside the glass was lower than the water level in the basin. Why?

A The water is too heavy.
B The glass is waterproof.
C The air inside the glass occupies space.
D Air has no mass.
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Worked Solution

Step 1: The glass is not empty; it is filled with air. Step 2: Air is matter and occupies space. Step 3: The air prevents the water from entering the glass completely.

Correct answer: The air inside the glass occupies space.

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