Standard Science Primary 4 Matter

Ross has a sponge. He says that the sponge is not a solid because he can change its shape and volume by squeezing it. Is he correct?

A No, because all matter can be compressed.
B Yes, because solids have a fixed shape.
C No, because the sponge is made of solid material with air holes.
D Yes, because solids have a fixed volume.
Show Worked Solution

Worked Solution

Step 1: A sponge is a solid material with many tiny holes filled with air. Step [2-9]: Squeezing it pushes the air out, which changes the total volume of the object (sponge + air). Step [2-9]: The solid part of the sponge itself does not change its volume.

Correct answer: No, because the sponge is made of solid material with air holes.

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