Across
- 2. a flow of electrons that alternates in direction in an electric circuit
- 4. the controlled flow of electrons through a conductor
- 8. a device that converts light energy from any light source directly into electrical energy
- 11. a continuous path in which electrons can flow
- 13. a device in an electric circuit that controls the flow of electrons by opening or closing the circuit
- 14. an electric cell that can be recharged
- 15. a resource that cannot be replaced as quickly as it is consumed
- 17. any biological material (including plants and animals)
Down
- 1. a flow of electrons in one direction through an electric circuit
- 3. the rate at which electrical energy is produced or used
- 5. a device that converts chemical energy into electrical energy
- 6. the energy provided by the flow of electrons in an electric circuit
- 7. the SI unit for measuring electrical energy usage; the use of one kilowatt of power for one hour
- 9. a natural energy resource that is unlimited, or can be replenished by natural processes in a relatively short period of time
- 10. comparison of the energy output of a device with the energy supplied
- 12. an electric cell that may only be used once
- 16. the part of an electric circuit that converts electrical energy into other forms of energy