Across
- 1. an imbalance of electric charge on an object's surface
- 3. a device that converts electrical energy into other forms
- 6. a material that does not let electrons move easily
- 7. a device used to measure current
- 9. a rechargeable electric cell
- 10. opposition to the flow of electrons
- 11. the controlled flow of electrons through a conductor
- 15. when an object has fewer electrons than protons
- 16. connecting an object to Earth to remove electric charge
- 19. the electric potential difference between two points
- 20. a ranking of substances by attraction for electrons
- 21. when an object has more electrons than protons
- 22. fuel made of biological material that can be burned
- 23. falling water spins a turbine to generate electricity
Down
- 2. a material that lets electrons move easily
- 4. a device that opens and closes a circuit
- 5. an energy source that converts chemical energy into electrical energy
- 8. a comparison of energy output to energy supplied
- 12. a device that reduces the flow of electric current
- 13. a circuit with two or more paths for electrons
- 14. a device that measures potential difference
- 17. when an object has equal numbers of protons and electrons
- 18. energy transferred by circulating liquid through the ground