Investigate how different soils influence the movement of contaminants. Related Resources Check out this link to see a Groundwater Flow Diagram. This is a link to a graphic of Groundwater Contamination from waste disposal sites. A list of Sources of groundwater contamination. Students will measure soil volume and make visual observations about water movement through soil.
Percolation is the downward flow or seepage of water through the pores of rocks and soil.
The following is a list of materials that should be distributed to each lab group participating in this activity. Students should use a paperclip to poke several holes in the bottom and lower portion of each. Each cup should have the same number of holes located approximately in the same spots. Put a piece of cheesecloth over the bottom of each cup so that the holes are covered, and secure the cheese cloth with a rubber band. Cut a hole in the coffee lid with a pair of scissors so the cup fits in the lid.