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6. what is the angle of incidence equal to?

  • the angle from the mirror to the normal
  • the angle of refraction
  • the angle of reflection
  • the sine rule of the angle

7. in what state do the particles have the most energy?

  • liquid
  • gas
  • solid

8. what is the definition of u-value?

  • the measure of how effective a material is as an insulator
  • the value of how much it costs to pay a material back compared to the amount of money it saves
  • it measures the cost of an electrical device

9. What, apart from particles carries kinetic energy through metals?

  • protons
  • free electrons
  • neutrons
  • the current

10. why is the voltage stepped up for long- distance transportation in cables?

  • it's cheaper
  • it makes the journey faster
  • because less energy is lost
  • it's easier to transport the energy

11. which type of fuel is non-renewable?

  • geothermal energy
  • nuclear power
  • hydro-electric power
  • biofuels

12. what is a reflected image?

  • virtual
  • real

13. how do we know if an image is virtual?

  • the image is larger
  • the image cannot be projected onto a screen
  • the image is smaller
  • the image doesn't look real

14. What is the national grid?

  • the cables that connect homes to power stations
  • the telephone wires that connect homes to eachother
  • a system of power stations, cables and transformers
  • all the power stations in the UK

15. what wave is a transverse wave?

  • gamma ray
  • sound wave

16. what voltage is supplied to homes?

  • 330V
  • 50V
  • 230V
  • 500V

17. what is power measured in?

  • coulombs
  • amps
  • watts
  • joules

18. what is a property of a transverse wave?

  • they can reflect and refract
  • they can only travel through particles

19. what objects lose heat faster?

  • objects with a large surface area
  • shiny objects
  • objects with a small surface area