Conversion of energy

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Key Learning Points

1. Energy in different forms
2. Conservation of energy

Introduction

Students are given several pictures of different physical processes. They will discuss the energy transfer in each process and give a brief presentation in class.

Procedure

1. The students are divided into several groups.
2. The teacher gives each group several pictures of different physical processes.
3. Students should discuss among themselves the process of energy transfer for each picture.
4. Each group should present their results in a few minutes.

Picture

1. A peak tram going uphill	2. Lifting up a cargo by a mechanical arm

3. A hydroelectric power station	4. Wind generators

5. Nuclear explosion	6. A steam locomotive

7. A KCR train	8. Receiving a mobile phone call

9. Skiing	10. Water-skating

11. Climbing rocks	12. A power plant uses coal to generate electricity

13. Riding a mini-motorbike	14. Drilling wood to obtain fire