Cup of instant noodles, e.g., Maruchan instant lunch. You pour in the hot water, then wait a few minutes. The water level has gone down. Sure, the noodles have absorbed the water, but shouldn’t the volume basically balance? The water level is significantly reduced after absorption, without the noodles expanding so much that the new level is equal to the level that the cup was initially filled with water.
In: Physics
Two things: the water is getting soaked into the noodles and also some of it will naturally evaporate due to the temperature of the water.
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