Moslems On The Rampage - and some other stuff.
The Aquifer Model: (aka - the other stuff)
I am unable to get a picture of it because something has happened to the digital camera - boohoo. On the bright side, it wasn't much to look at. I used a glass vase and had the kids pack the bottom with clay and then layer pea gravel, soil, and coarse sand. Then they poured a bit of water on top and we watched the water travel through the layers - all the time talking about porosity and permeability and then a short discussion on what the water table is. Then they used a pencil to drill down to the clay layer to simulate a well. A dropper was used to extract water from the well. The environmentalists will be happy to know that we also squirted food coloring (they chose green) on the top to illustrate how pollutants can seep into aquifers and affect the water that is there just waiting for us to drink. After awhile - - sure enough - - the water at the bottom was light green and the dropper drew up light green water as well. We then spoke of the memory that we had of the officials coming to scream at a neighbor of ours whose car engine decided to spew every last fluid in it's belly all over the street. It was quite a scene and the cleanup was very interesting. I'm sure it cost a fortune as it involved 3 municipal workers spreading what looked like kitty litter all over the spill and then the street sweeper paid a visit to vacuum it all up.
Here is a link - and I hope that it actually works - to a map I made of US Aquifers. This is a great site - you are able to make maps for just about anything with as many 'layers' of information that you would like. It is National Atlas (.gov) Enjoy the pretty colors!