Advanced Science Primary 4 Matter

Alexa has a displacement can filled with water up to the spout. She carefully lowers a hollow metal ball into the water. If the ball floats, which statement is true about the water that overflows into the measuring cylinder?

A The volume of water collected equals the volume of the submerged part of the ball.
B No water will overflow because the ball floats.
C The volume of water collected equals the total volume of the ball.
D The volume of water collected is greater than the volume of the ball.
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Worked Solution

Step 1: An object displaces a volume of liquid equal to the volume of the part that is underwater. Step [2-9]: Since the ball floats, only a portion is submerged. Step [2-9]: Thus, the overflow matches the submerged volume.

Correct answer: The volume of water collected equals the volume of the submerged part of the ball.

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