Standard Science Primary 4 Matter

Siti inverted a glass with a piece of dry tissue taped to the bottom into a basin of water. When she removed the glass, the tissue was still dry. Why?

A Air in the glass occupied space and prevented water from entering.
B The tissue is waterproof.
C The glass was made of a material that repels water.
D The water was not deep enough.
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Worked Solution

Step 1: Identify the contents of the inverted glass (Air). Step 2: Recognize that air is matter and occupies space. Step 3: Because air occupied the space in the glass, the water could not enter to wet the tissue.

Correct answer: Air in the glass occupied space and prevented water from entering.

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