Transcripts Fill three cups, each with a different size pebble; one course, one medium, and one fine grained. Each cup should be filled to the same level. Note the water level in the graduated cylinder before it is poured into each cup. Record how much water is left in the graduated cylinder after the water is poured into each cup. Which had the most left over? Note how much water is in the graduated cylinder before being poured into the funnel. Record how much water is collected in the cup under each funnel. Which one allowed the most water through? Why do you think so? Questions Answer the following questions in the Essay box below. Which rock sample had the most porosity? Which sample had the least? How much empty space was there in the medium-sized rock sample? How much time did it take the water to flow through the gravel? The sand? What about the dirt? Which sample is the most permeable?