Energy & Power

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

These video lessons are based on question-and-answer flashcards. You can either make your own or download the printable flashcards from the shop.

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.

Energy & Power

Energy & EfficiencyPower & Cost Effectiveness
1. Nine forms of energy22. Power and energy
2. Sankey diagram and energy transfers23. Power equation
3. Energy transfer and forms24. Power calculation
4. Sun-Earth energy transfers25. Units of power
5. Energy transfers in machines26. Energy transferred equation
6. Energy efficiency of an appliance27. Energy transferred calculation
7. Efficiency equations28. Cost of electrical energy calculation
8. Efficiency of a light bulb calculation29. Electricity meter reading calculation
9. Efficiency of an electric motor calculation30. Cost-effectiveness of appliances
10. Gravitational potential energy equation31. Payback time
11. Gravitational potential energy calculationEnergy Resources
12. Kinetic energy equation32. Renewable energy sources
13. Kinetic energy calculation33. Energy sources for power stations
14. Maximum speed of a falling body calculation34. Methods of generating electricity
Work Done35. Sources of energy from the Sun
15. What does Work Done mean?36. Electricity from the sun
16. Forces and energy transfers37. Electricity from volcanic areas
17. Braking and work done38. Solar panels for heating buildings
18. Braking energy transfer examples39. Advantages and disadvantages of energy resources
19. Springs and work done40. Electricity demand variation
20. Work done by a force equation41. Power station startup time
21. Playground slide calculation42. 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