9I Revision - Power and Energy

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Across
  1. 2. This is a measure of power or energy (joules) per second
  2. 5. This part of a power station contains massive electromagnets
  3. 7. the only useful energy type in a light bulb
  4. 8. These can be turned by wind or water to generate electricity
  5. 9. Payback time is a way we can check how much ____ our investments will take to break even
  6. 10. Energy that transforms into a type you don't need is said to be what
  7. 13. This is a type of energy source that shouldn't run out
  8. 14. These can be burned to create energy but they are running out (2 words)
  9. 15. This is a unit we use to measure the current
  10. 16. The amount of energy the electrons in a current are able to transfer
  11. 17. energy produced from batteries and fossil fuels
  12. 19. Stored energies, such as strain energy in an elastic band, are known as?
  13. 20. An alternative to fossil fuels, made from plants and animals
  14. 21. A metal used in house wiring
Down
  1. 1. Electrcity can reach us by travelling along cables belong to which Grid?
  2. 3. This is a name we give to gases like carbon dioxide which get trapped in the ozone layer and lead to global warming
  3. 4. This is something you can install at home to use sunlight to generate electricity (2 words)
  4. 6. In a hydrogen car, hopefully this will be recycled in the engine
  5. 11. heat energy
  6. 12. If our appliances are more energy _______ they will be more effective and cost us less
  7. 17. the rule about the amount of energy is that is can only be _______, not made or destroyed.
  8. 18. Nuclear power actually comes from inside an element's ______?