Across
- 1. force exerted by all charged objects on each other
- 3. these magnetic poles repel
- 5. electricity generated by falling water
- 7. an object that attracts and repels certain objects
- 8. process of generating electric current with a magnetic field
- 9. metals strongly attracted to magnets
- 11. weakens a motor
- 14. area where magnetic force is exerted
- 17. compass end that points to a north pole
- 18. source of electrical power
- 20. strengthens an electromagnet
- 21. measurement for voltage
- 23. what two like poles of two magnets do
- 24. positively charged particles
- 27. the energy of lake water behind a TVA dam
- 30. SI measurement of electric current
Down
- 2. flow of electric charge
- 4. coiled wire that can make a weak magnetic field when electric current flows through it
- 6. created by excess of electrons on an object
- 10. force that pushes electrons in electric current
- 12. temporary magnet having an electrical source, solenoid, and iron core
- 13. device that can open or close an electrical circuit, on or off
- 14. device that converts electrical energy into mechanical energy
- 15. device changing mechanical energy to electrical energy
- 16. microscopic region in magnetic material that can make a magnet when aligned
- 19. negatively charged particles
- 22. most wires are made of this inexpensive metal
- 25. these magnetic poles attract
- 26. magnet easily magnetized and demagnetized
- 28. electrons cannot move easily through this material
- 29. magnet that keeps its magnetic properties a very long time