WVGSA Grade 5 Science Practice Questions - West Virginia General Summative Assessment Grade 5 Science Exam

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When a hand pump is used to inflate a deflated basketball, the basketball expands and becomes firm. Which statement best explains why adding air makes the ball firm?

Air turns into a solid layer inside the ball. Air particles take up space and push outward against the inner walls of the ball. Air destroys the rubber skin of the ball and replaces it with foam. Air cools the inside of the ball until the rubber freezes solid.

Correct Answer:

Air particles take up space and push outward against the inner walls of the ball.

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