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How does a sponge hold water, if it's full of holes?
The many holes of a sponge hold water because of a scientific concept known as surface tension. ... Each tiny hole inside a sponge is its own little pocket of surface tension. As you handle a soaked sponge, the surface tension "bubbles" will break and reform inside it.
The sponge can hold water even if it's full of holes for the reason that the increased 'surface tension' is created by the 'structure of the sponge' with small holes in it. Those holes then draw in the moisture and it sticks to the surface of the sponge.
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