Question
What about a sponge? It is a solid yet we are able to compress it. Why?
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Answer
A sponge is considered a solid, but it can be compressed because of its porous structure.
It is made of a solid material that has a large number of tiny holes or spaces, which are filled with air. When you press a sponge, you are not compressing the solid material itself, but rather squeezing the air out of these pores. The solid framework of the sponge is also elastic, allowing it to return to its original shape once the pressure is released and the air rushes back in.
It is made of a solid material that has a large number of tiny holes or spaces, which are filled with air. When you press a sponge, you are not compressing the solid material itself, but rather squeezing the air out of these pores. The solid framework of the sponge is also elastic, allowing it to return to its original shape once the pressure is released and the air rushes back in.
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