Across
- 2. The horizontal distance from crest to crest
- 4. - the International System of Units' (SI) standard unit of power (energy per unit time), the equivalent of one jouleper second
- 6. area of magnetic force around a magnet.
- 8. device used to measure voltage.
- 9. The speed of the wave in s certain direction expressed as distance per unit of time.
- 10. vertical distance from crest to average surface level or still water level.
- 14. to pull together.
- 15. each end of magnet.
- 16. any material that attracts iron and materials that contain iron.
- 19. Highest point of the wave
- 20. electrical device that resists the flow of current in a circuit.
- 22. metal in the alloy steel.
- 23. a piece of iron that becomes a temporary magnet when electricity flows a through an isolated wire wrapped around it.
- 24. when magnetic fields of all atoms are lined up in the same direction.
Down
- 1. The time that it takes for one complete wave, from crest to crest to pass a fixed point
- 3. The number of wavecrest that pass a fexed point per unit of time
- 5. The vertical distance from crest to Trough
- 7. a form of the mineral magnetite that is naturally magnetic.
- 11. A material that opposes the flow of electric current
- 12. The line forming the crest of a two dimension wave
- 13. an instrument that uses a freely moving magnetic needle to indicate direction.
- 17. magnetism that remains for a long time.
- 18. A subatomic particle with a negative electrical charge
- 21. Lowest point of the wave
- 25. A path of conductors that an electric current flows