Electromagnetism Worksheet (Study Guide)

1. ______is a naturally occurring mineral that is

magnetic.

2. The north pole of a magnet will always point to the Earth’s magnetic ______

pole and the Earth’s geographic ______pole.

3. Two ways to demagnetize a magnet are 1. ______

2. ______

4. A material is magnetic when its ______are

aligned.

5. The north pole of one magnet will ______the north pole of another magnetic.

6. Circle the right answer: If you cut a magnet into two pieces you will

a. demagnetize it c. supermagnetify it

b. cause it to blow upd. produce two smaller magnets

7. The 2 basic components of an electric motor are a1. ______

and a2. ______

8. An electric motor converts ______energy to

______energy.

9. ______is produced when you take a magnet and move it

through a coil of wire.

10. The loops of wire in an electromagnet are called a ______.

11. The term______refers to materials that CAN be magnetized.

12. A magnetic ______surrounds a magnet and exerts a magnetic

force.

13. On a bar magnet, where is the magnetic force the strongest? ______

14. On a separate sheet of paper, list 4 things that use Electromagnets to work and 4 things that use Electromagnetic Induction to work.

15. Name 2 ways you can increase the strength of an electromagnet?

a. ______b. ______

16. Name 2 ways electromagnetic induction would be used.

a. ______b. ______

17. What are two advantages of an electromagnets?

a. ______b. ______

18. Name 2 uses of electromagnets. 1. ______

2. ______

19. In a generator, ______energy is converted to

______energy.

20. The picture right is a(n) ______.

21. Which of the following nails is magnetized? A or B? Circle one.

A.

B.

22. A ______in an electric motor switches the current every

half turn so that the electromagnet is not attracted to the upcoming permanent magnet.

23. ______is when an electric current is produced by

moving a magnet through a loop of wire.

24. What is a turbine? Explain its purpose.______

______

Bonus: Who discovered there was a relationship between magnetism and electricity? Explain how he discovered it.