E-1 Solar Heating: Three different coloured containers are filled with water and left in a sunny location. The temperature change of water in each container is measured and recorded. Science Process Skills: Observing, Communicating, Co-operating, Measuring, Predicting, Interpreting, Controlling Variables.

E-2 Wind Energy: A 2-bladed and a 6-bladed windmill are constructed to demonstrate that: wind has energy; wind energy may be converted to do physical work; and power derived from the wind depends on the design of the windmill (engine). Requires an electric fan. Science Process Skills: Observing, Communicating, Co- operating, Measuring, Inferring, Predicting, Interpreting, Controlling Variables, Developing Models.

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