In the classroom, the students (working in teams of two) created a water cycle in a bottle. First, each empty plastic bottle was filled half way with hot water. The bottles were inverted and placed into plastic cups.
An ice cube was placed on the flat end of each bottle. The cold coming from the ice cube draws the warm water up. Perception occurs as the water droplets get too heavy to stick to the inverted bottom of the bottle.
The students also constructed their own version of the Pelton water wheel.
Using Styrofoam paper plates, they first punched matching holes in the their two plates (first image to the left).
They then stapled cups around the inside of one plate (second image to the left).Their second plate was then stapled to the other side so that the cups were sandwiched in-between.
A completed water wheel is shown here (image to the right).
We gave the water wheels a test run using a lengthen coat hanger (as a string) run through the middle. A water hose acted as our spray nozzle.
The students completed the day with a mapping exercise using ArcGIS Explorer Online. They answered several questions about the San Gorgonio wind farm, did some measuring between the wind farm and Los Angeles, compared this wind farm to another, and they listed the geographic features necessary for a find farm (as well as a solar farm and a hydro-electric dam).
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Source:
Water cycle demonstration:
http://scienceprojectideasforkids.com/2009/water-cycle/
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