Energy & Power Welcome to the GCSE Physics Ninja Energy & Power course.

 Energy & Efficiency Power & Cost Effectiveness 1. Nine forms of energy 22. Power and energy 2. Sankey diagram and energy transfers 23. Power equation 3. Energy transfer and forms 24. Power calculation 4. Sun-Earth energy transfers 25. Units of power 5. Energy transfers in machines 26. Energy transferred equation 6. Energy efficiency of an appliance 27. Energy transferred calculation 7. Efficiency equations 28. Cost of electrical energy calculation 8. Efficiency of a light bulb calculation 29. Electricity meter reading calculation 9. Efficiency of an electric motor calculation 30. Cost-effectiveness of appliances 10. Gravitational potential energy equation 31. Payback time 11. Gravitational potential energy calculation Energy Resources 12. Kinetic energy equation 32. Renewable energy sources 13. Kinetic energy calculation 33. Energy sources for power stations 14. Maximum speed of a falling body calculation 34. Methods of generating electricity Work Done 35. Sources of energy from the Sun 15. What does Work Done mean? 36. Electricity from the sun 16. Forces and energy transfers 37. Electricity from volcanic areas 17. Braking and work done 38. Solar panels for heating buildings 18. Braking energy transfer examples 39. Advantages and disadvantages of energy resources 19. Springs and work done 40. Electricity demand variation 20. Work done by a force equation 41. Power station startup time 21. Playground slide calculation 42. Small scale electricity generation 43. Energy resources and the environment 44. Carbon dioxide 45. Electricity distribution 46. Overhead vs underground electricity cables 47. Transformers and the national grid

What will I learn in this course?

When you have completed this course, you will be able to...

• Understand how energy can travel and transfer from one form to another.
• Calculate the efficiency of a machine or process.
• Calculate the gravitational potential energy and kinetic energy of a body.
• Work out the maximum speed of a falling body.
• Understand the term 'work done' and how forces can 'do work'.
• Explain the idea of power in terms of energy transfer and time.
• Calculate power using both standard units and 'domestic power' units.
• Work out the cost of running an electrical appliance.
• Understand the payback time of installing a more efficient appliance.
• Describe and compare different energy resources available for our energy needs.
• Explain the environmental impact of different energy resources.
• Understand and describe how electricity is generated and distributed.