Did you know that wetlands actually filter water? We did our own experiment to see if it really works.
1. We turned a 20 oz. soda bottle upside down into a glass jar. Then we poured in a cup of rocks,
a cup of sand,
and a cup of peat.
You need to run water through at this point until the water runs clear.
Then we made muddy water by adding a half cup of potting soil to a jar of water.
Finally, we poured our muddy water in and watched in amazement as the water that came through was pretty clean!
Bill Nye has a great wetlands video which was extra fun since most of the kids had never seen his wackiness!