Physics Crossword Puzzle (Robbie von Seelen, James McGill and John Brennan)

3. rocks a silicate mineral, one that is rich in magnesium and iron
7. the formation of new areas of organic crust
8. a device with a magnetic pointer which designated direction
11. each of the points near the extremities of the axis of rotation of the earth or another celestial body where a magnetic needle dips vertically
13. to distance oneself from
14. electric motor driven by a direct current
15. electric motor driven by an alternating current
16. the inference of general law from a particular instance
17. Chinese admiral who used the newly invented compass to explore the world
19. change in a planet's magnetic field such that the positions of magnetic north and magnetic south are interchanged, while geographic north and geographic south remain the same
22. flux product of the average magnetic field times the perpendicular area that it penetrate
23. the rotating coil or coils of a dynamo or electric motor.

1. a way to to determine the direction of the magnetic force on a positive moving charge
2. having a high susceptibility to magnetization
4. The magnetic force on a current-carrying wire is perpendicular to both the wire and the magnetic field with direction given by the right hand rule
5. device that converts mechanical energy to electrical energy for use in an external circuit
6. galvanometer instrument used for detecting and indicating electric current
9. discovered that electric currents create magnetic fields, which was the first connection found between electricity and magnetism
10. a cylindrical coil of wire acting as a magnet when carrying electric current.
12. a soft metal core made into a magnet by the passage of electric current through a coil surrounding it.
18. a type of magnetic mineral
20. main discoveries include the principles underlying electromagnetic induction, diamagnetism and electrolysis
21. cause to come to a place