Standard Science Primary 4 Matter

Jun Jie inverted a glass with a piece of dry tissue taped to the bottom into a basin of water. He noticed the tissue remained dry. What does this experiment prove?

A Air can be compressed.
B Air has mass.
C Air has no definite shape.
D Air takes up space.
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Worked Solution

Step 1: The glass is filled with air. Step 2: When inverted, the air trapped inside prevents water from entering the glass. Step 3: This proves air takes up space.

Correct answer: Air takes up space.

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