Back to quiz

6. Where does the energy in a circuit come from?

  • the national grid
  • water
  • the current flowing through it
  • fossil fuels

7. true of false: some energy is always lost?

  • false-it's all converted into different forms
  • true- some is useful energy and the rest is lost energy

8. What are sankey diagrams?

  • energy transformation diagrams
  • diagrams used to measure the cost of a machine/appliance

9. What is the power of a circuit?

  • The rate of energy transfer
  • The amount of photons transferring energy
  • The amount of useful energy being transferred