Standard Science Primary 4 Matter

Stan places an empty glass upside down into a basin of water. He notices that the water does not completely fill the glass. Why?

A The air in the glass takes up space.
B The glass is already full of water.
C The glass is waterproof.
D The water is too heavy to enter the glass.
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Worked Solution

Step 1: The empty glass is actually filled with air. Step 2: Air is matter. Step 3: Matter occupies space. The trapped air prevents the water from completely filling the glass.

Correct answer: The air in the glass takes up space.

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