Magnetism Study Sheet



1. The places on a magnet where the magnetic forces are strongest are called the _____.

2. The _____ are at the end of most magnets.

3. If the poles of a magnet are allowed to swing freely, one will line up facing _____ and the other will line up facing _____.

4. The two poles of a magnet are called the _____-_______ pole and the _____-_______ pole.

5. The north-seeking poles of two magnets will _____ each other.

6. The south-seeking poles of two magnets will ______ each other.

7. The north-seeking pole of one magnet will be _________ to the south-seeking pole of another magnet.

8. For magnets, like poles _____ and unlike poles _______.

9. The north-seeking and south-seeking poles of a magnet ______ be separated.

10. If you cut a bar magnet in half, this results in two magnets, each having a _____ and a _____-seeking pole.

11. In a magnetized object, it is believed that _________ and _______ become lined up opposite each other.

12. For objects which are attracted to magnets, the ________ or ________ force of the magnet causes these materials to have their _______ and _________ line up in a similar, but ________ way.

13. Metals which are attracted to magnets include ____, ______ and ______.

14. The longer materials are exposed to a magnet, the ______ it takes for these materials to return to their normal alignment.

15. If exposed to a strong magnet for a long period of time, some materials become ___________ magnets.

16. Magnetic properties can be destroyed by _______ and by _______ the magnet.

17. The region around a magnet where its magnetic force can act is called a ________ _____.

18. Earth has a core of iron which is a ______ and produces a ________ _____.

19. The needle of a compass is also a ______.

20. Earth's magnetic north pole is in ________ ______, just north of the _____ ______.

21. Earth's magnetic south pole is near the ________ ______.

22. Earth's ________ north and south-seeking poles are not exactly at the __________ north and south poles.

23. A ______ can be used to determine if a wire is carrying an electric current.

24. An electric current produces a ________ field.

25. The magnetic field produced by electricity is called an ______________ _____.

26. The stronger the electric current in a wire, the ________ the electromagnetic field.

27. You can also make the electromagnetic fields stronger by _______ up a wire which carries an ________ current.

28. The ____ wire you have ______ up, the stronger the electromagnetic field.

29. The same electric current will have a stronger electromagnetic field if it is going though ______ wire.

30. The magnetic fields of a coiled wire through which electric current flows can be made even stronger by placing an ____ ___ inside the coiled wire.

31. An iron bar inside a coil of wire through which electric current is flowing is called an ______________.

32. The ____________ is magnetic only when electric current is flowing through the wire.

33. An electromagnet can be turned on or off by turning on or off the ________ _______.

34. What two things determines the strength of an electromagnet?



35. A ____________ is an instrument which can detect small electric currents.

36. The human nervous system runs on ________ _______.

37. If a person becomes slightly _______, a galvanometer can detect this increase in the electric current in the _____.

38. The ________ _____ ________ (_ _ _) can be used as an emotion detector, and it is one of the measurements taken in a _ ________ or a ___ _______ ____.

39. If a magnet can be made using electric current, ________ _______ can be made using a magnet.

40. Wire has electrons which are free to ____.

41. When a coil of wire is moved along a magnet, the _________ of the wire will move. This is called _________.

42. Electric generators produce electric current through _____________ _________.

43. LP&L generates the electricity used in homes and businesses by rotating a ____ ___ ____ through a magnetic ______.

Magnetism Notes