Moving or falling water is a natural source of energy. Make a waterwheel to show how water gets things moving.

• An empty thread spool
• A thin stick, drinking straw, or knitting needle (that will fit through the hole in the spool)
• An index card
• Scissors
• Glue

Cut four 1” x 1-1/2 strips from the index card.

Fold the strips in half.

Glue half of each folded strip to the spool with the other half sticking up, so that they look like paddles all around the spool.

Put your stick through the hole in the spool. Hold your waterwheel under gently running water so that he water hits the blades and makes them turn.

The falling water is the energy source that hits one blade and pushes it. The next blade then moves under the water, the water pushes it, and the wheel turns. The wheel keeps turning as long as the water falls on the blades.