1. © KCL/PENTECH/WCED 2000 Day length Energy changes Stored energyEnergy on the move Chemical energy Strain energy Position energy Light Sound Current electricity Heat conduction Heat convection Movement energy IDENTIFY which forms of energy, given above, are involved in the examples, given below ? 1. Battery 3. Stretched elastic band 2. Falling ball 4. Food 5. Hot saucepan 6. Smoke 7. Clockwork (Wind-up) toy 8. Television 9. Growing plant 10. Burning paraffin 1.

2. © KCL/PENTECH/WCED 2000 Day length Energy changes Electrical energy Electric Motor Movement energy Sound energy Heat energy Energy flow through an electric motor Fan Electric motor Electricity supply WRITE OUT what this diagram shows 2.

3. © KCL/PENTECH/WCED 2000 Day length Energy changes DRAW energy flow diagrams for each of the following. 1. An electric lamp, where electrical energy is converted to light energy and heat energy. 2. A television, where electrical energy is converted to sound energy, light energy and some heat energy. 3. A car, where chemical energy is converted to motion energy, sound energy and heat energy. 3.

4. © KCL/PENTECH/WCED 2000 Day length Energy changes WRITE OUT what this diagram shows Heat in smoke 10% Electricity 30% 60% 100% chemical energy in coal Here is an energy flow diagram for a coal fired power station Heat in cooling tower water and steam 4.