Left: experiments of three different soils: sand, brown sand, and dirt. Right: Put dirt in the cup and water after it. Wait for a few hours or a day. Later, look at it and see what has happened. It might have bubbled at the top seal. The water was evaporated over time.



Soil samples are put in cups and coffee filters and see how much water would drip from it, which was the fastest, the slowest, and the most powerful to pull them back.