Question

simple experiment on filteration​

Answer 1

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In the plastic cup, start by lining the bottom with the coffee filters. Then place a layer of clean sand followed by a layer of gravel. ... Pour the dirty water into the cup so it can filter down through the gravel, sand and coffee filters. Look at the difference in the water before and after!

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Answer 2

Answer:

Place the cup into an empty jar. Pour the dirty water into the cup so it can filter down through the gravel, sand and coffee filters. Look at the difference in the water before and after! The filter collects all of the dirt and particles in it making the water much cleaner.