Investigate Water Power

Materials:
- Foil Dish
- Scissors
- Pencil
- Tape
- Piece of string
- Weight of some sort

Procedure:
1. Make 8 equally spaced cuts around the edge and towards the centre of the plate. End each about 1 cm from the centre.
2. Fold one edge of each to make small ledges.
3. Puch a hole in the middle and push the pencil through. Tape it into place.
4. Let the pencil rest between your fingers and thumbs and hold the wheel under a stream of water (running tap). (What happens when the rate of flow is increased or reduced?)
5. Tie a piece of string to the pencil and attach the weight to the other end. The water wheel should wind the weight up to the pencil. (How much can be lifted? What happens when the load is too heavy?)