This document describes how to build a simple waterwheel that can harness the energy from flowing water. The instructions include a list of materials and step-by-step directions to cut a plastic bottle into blades, attach them to a cork wheel, and suspend the wheel in a stream of water so that it will rotate as the water strikes the blades. The summary explains that waterwheels can harness a renewable source of energy from water and potentially provide power without using non-renewable resources like coal or oil. Water is a renewable resource that can be used to generate electricity and reduce the need for fossil fuels.

1. Energy Experiment: Waterwheel
Yunice Chee
G5L
Feb 2012

2. Why waterwheel can be an energy?
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3. 1. 2.3 liter plastic bottle
2. Ruler
3. Scissors
4. Marker
5. Craft knife
6. 1 awl
7. 1 cutting board
8. 2 corks
9. 1 wooden barbecue stick
10. 1 fishing thread
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11. Fishing sinker weight about 1 oz

4. 1. Cut the bottom of the bottle 2. then cut 8 pieces of blades with
into 8cm deep. 4cm long x 2cm wide.
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5. 4. Cut slits with a craft knife and
push a blade into each slit, make
3. Draw eight lines evenly on sure the strips all curve in the
one side of a cork. same direction.
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6. 6. Cut a BBQ stick into 2 half and put 1
5. Cut away middle the section of 1 side of half through to a hole and the end
the bottom, use an awl to make two hole goes to a side of cork, and the other
below the rim and big enough for a BBQ side is the same, to hold the wheel in
stick to go through & move easily. the middle.
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7. 7. Use the awl to make a mark in the 8. On one side, tie a fishing thread
middle of the second cork, then put with the cork and on the other
the cork in either side of a stick. side with fishing sinker.
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8. 9. Put the wheel under a tap, open the tap, the wheel will
rotate by falling water striking blades near top of the wheel
and lift the weight.
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9. Water will turn the water wheel
to move, so water is a renewable
resources.
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10. Water can replace the electricity
to provide the energy to power a
heater and so on.
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11. 1. We will always need energy. Power plant burn the
coal and oil to make electricity which provides the
energy to power a heater but they are not renewable
resources. However, water is renewable resource
can replace over time.
2. This experiment is useful because using water wheel
can reduce the amount of fossil fuels needed in
electricity. It is a renewable resource and will
not be used up. It also does not product air
pollution. Air pollution might affect our health
and cause lung cancer.
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12. References
http://www.teachengineering.org/view_activity.php?url=h
ttp://www.teachengineering.org/collection/cub_/activiti
es/cub_energy2/cub_energy2_lesson08_activity2.xml&ri
ghts=true#objectives
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