Magnets are made of iron, nickel, cobalt, or steel. To preserve a bar magnet long term, you should store it with another magnet to maintain its magnetic field. When a magnet breaks, its magnetic field also breaks into smaller fields in each broken piece. An electromagnet generates a magnetic field through a coil of wire when electric current passes through; placing an iron core inside the coil strengthens the magnetic field. Materials can be magnetic, like iron, cobalt, and nickel, or non-magnetic, like aluminum, copper, glass, plastic, and wood.

1. What are magnets made of?
ironiron nickelnickel cobaltcobalt

2. What are magnets made of?
SteelSteel

3. If you want to store a magnet for a
long time, what shall you do?

4. The keeper preserves the magnetic
field

5. How do you preserve a bar magnet?

6. Directions of the magnetic field

7. What happens when a magnet is
broken?

9. Electromagnet
When current moves through a wire, it
generates magnetic field.
Magnetic field in a single wire is very weak.

10. Electromagnet
By coiling the wire, magnetic field becomes
stronger

11. Electromagnet
Magnetic field becomes even stronger by
placing an iron bar in the center of the coil.

12. Electromagnet

13. Materials that are
attracted towards
a magnet
Materials that are
not attracted
towards a magnet
magneticmagnetic Non-
magnetic
Non-
magnetic
Magnetic and non-magnetic materials

14. Magnetic or non-magnetic
Aluminium
can
Non-magnetic

15. Magnetic or non-magnetic
Cobalt knife
magnetic

16. Magnetic or non-magnetic
Copper coin
Non-magnetic

17. Magnetic or non-magnetic
silver coin
Non-magnetic

18. Magnetic or non-magnetic
Brass key
Non-magnetic

19. Magnetic or non-magnetic
Nickel coin
magnetic

20. Magnetic or non-magnetic
Glass cup
Non-magnetic

21. Magnetic or non-magnetic
gold coin
Non-magnetic

22. Magnetic or non-magnetic
Lead pencil
Non-magnetic

23. Magnetic or non-magnetic
Iron nail
magnetic

24. Magnetic or non-magnetic
Steel spoon
magnetic

25. Magnetic or non-magnetic
Plastic spoon
Non-magnetic

26. Magnetic or non-magnetic
Copper kettle
Non-magnetic

27. Magnetic or non-magnetic
Nickel lighter
magnetic

28. Magnetic or non-magnetic
Wooden chair
Non-magnetic