RISE Science Grade 5 Practice Questions - RISE Science - Grade 5 Exam

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Maya uses a hand pump to blow air into an empty rubber basketball until it becomes firm and heavy. Which statement best explains why the basketball inflates and increases in mass?

Air is weightless energy that expands the rubber when pushed inside. Air is made of tiny particles of matter that have mass and take up space inside the ball. The pump creates new rubber material inside the basketball as it is pumped. Air particles dissolve into the rubber shell, causing the rubber to swell.

Correct Answer:

Air is made of tiny particles of matter that have mass and take up space inside the ball.

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