Standard Science Primary 4 Cycles

Ravi placed a deflated balloon on a digital scale and recorded its mass. He then pumped air into the balloon and weighed it again. The mass increased. What does this prove?

A Air has mass.
B Air is a solid.
C Air occupies space.
D Air has no mass.
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Worked Solution

Step 1: The scale measures the amount of matter (mass). Step 2: Adding air increased the reading. Step 3: This proves air is matter and has mass.

Correct answer: Air has mass.

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