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  • IGCSE Edexcel
  • Physics
  • 4. Energy Resources & Energy Transfers

Physics

  • IGCSE Edexcel
  • Revision Notes

4. Energy Resources & Energy Transfers

4.1 Energy Transfers>4.2 Work and Power>4.3 Energy Resources and Electricity Generation>

1.1 Movement and Position >1.2 Forces, Movement, Shape and Momentum >

2.1 Mains Electricity >2.2 Energy and Voltage in Circuits >2.3 Energy Charge >

3.1 Properties of Waves >3.2 The Electromagnetic Spectrum >3.3 Light and Sound >

5.1 Density and Pressure >5.2 Change of State >5.3 Ideal Gas Molecules >

6.1 Magnetism >6.2 Electromagnetism >6.3 Electromagnetic Induction >

7.1 Radioactivity >7.2 Fission and Fusion >

8.1 Motion in the Universe >8.2 Stellar Evolution >8.3 Cosmology >

4.1 Energy Transfers

4.1.1 Use the following units: kilogram (kg), joule (J), metre (m), metre/second (m/s), metre/second2 (m/s2), newton (N), second (s) and watt (W)

Mass – kilograms (kg)

Energy – joules (J)

Distance – metres (m)

Velocity – metres per second (m/s)

Acceleration – metres per second squared (m/s2)

Force – newtons (N)

Time – seconds (s)

Power – watts (W)

4.1.2 Describe energy transfers involving energy stores:

  • energy stores: chemical, kinetic, gravitational, elastic, thermal, magnetic, electrostatic, nuclear
  • energy transfers: mechanically, electrically, by heating, by radiation (light and sound)

4.1.3 Use the principle of conservation of energy

4.1.4 Know and use the relationship between efficiency, useful energy output and total energy output:

4.1.5 Describe a variety of everyday and scientific devices and situations, explaining the transfer of the input energy in terms of the above relationship, including their representation by Sankey diagrams

4.1.6 Describe how thermal energy transfer may take place by conduction, convection and radiation

4.1.7 Explain the role of convection in everyday phenomena

4.1.8 Explain how emission and absorption of radiation are related to surface and temperature

4.1.9 Practical: investigate thermal energy transfer by conduction, convection and radiation

4.1.10 Explain ways of reducing unwanted energy transfer, such as insulation

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