Water Pollution… and how to clean it up! Experiment with different types of water pollution Make your own water filter

What are the 3 groups of pollution? Hydrocarbons – Gas, oil, etc. Dissolved substances – Chemicals, fertilizers, medicines Solids – Plastic water bottles, garbage, etc.

Making water pollution Materials: – ml pop bottle – put your group members’ names on the bottle – 1 funnel – 200 mL water – 1 – 250 mL beaker – Pollutants for your group

What to do: Rinse pop bottle twice with clean water Pour 200 mL of water into the 250 mL beaker Use the TDS meter to find the total dissolved solids in the clean water sample Use the pH meter to find the pH of the clean water Record all observations on the observations sheet

Pollute the water! One at a time add the pollutants that your group brought Record all observations – mixing, separation, floating of the pollutants Measure & record the TDS & pH after EACH addition Put the lid on the pop bottle and tighten it Gently shake the bottle to combine the pollutants Observe & record how the pollutants mix with the water Record your observations as the water begins to “relax”

Clean up the pollution! Observe the materials at the front of the room – 1 cup fine sand, 1 cup coarse sand, 1 cup fine rock, 1 cup coarse rock, 1 cup activated carbon, 1 cotton ball,1 small square of cheese cloth, 1 rubber band, L pop bottle, 1 plastic cup, 1 funnel (all materials listed are / group) Use these materials to build a water filter to clean up the polluted water that you made Design a filtering system using ALL of the materials on the table

Before you build your filter… Create a sketch of your group’s water filter Label all of the materials Remember…. You must use all of the materials on the table Hand your sketch in… we’ll build them tomorrow!

Creating Pollution observations: TDS clean water= ____ pH clean water = ____ Pollutant added _________________ Observations: ____________________________ Pollutant added _________________ Observations: ____________________________ Pollutant added _________________ Observations: ____________________________ Observations after shaking: _______________ _____________________________________ Observations after relaxing for 5 minutes: ______ ________________________________________ Sketch your proposed water filter on the back of this sheet