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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