Across
- 4. motor driven by a direct current
- 7. opposit of attract
- 8. igneous rock rich in magnesium
- 9. transferring electricity without contact
- 10. points near axis of the earth on opposite sides
- 13. a cylindrical coil of wire acting as a magnet
- 14. discovered electromagneticism
- 17. how to determine the magnetic force on something with your right hand
- 19. High susceptibility to magnetization
- 20. magnetic rock mineral
- 21. an instrument that detects small electric currents
- 22. change in a planets magnetic field
- 24. soft metal core made into a magnet
- 25. new oceanic crust formation
Down
- 1. an action that changes the direction of an object
- 2. motor that converts motive power into electrical power
- 3. exert a force on
- 5. a unit of magnetic field strength
- 6. motor driven by an alternating current
- 8. a measurement of the magnetic field in a specific region
- 11. prominent Chinese Mariner (Ming Dynasty)
- 12. magnetic field lines
- 15. forcé perpendicular to the magnetic field from the wire
- 16. rotating coil on an electrical motor
- 18. directional device (uses magnets)
- 23. región in a magnet that is uniform to dierection