Iron particles are lined up when a magnet is brought close to iron. When two bar magnets are placed close together with the same poles facing, they will repel each other. The magnetic field consists of field lines that emerge from the North pole and reenter at the South pole. Magnets are made of iron, nickel, or cobalt. Magnetic materials such as iron and steel are attracted to magnets, while non-magnetic materials like plastic and wood are not. To preserve a bar magnet, it should be stored with another magnet to maintain its magnetic field.

1. Iron nails

2. Matter is made up of ?
Particles

3. When I look closely to the iron particles,
how do they look like?
Lined upScattered

4. When I bring a magnet close to an iron,
what happens?
Does it attract or not?

5. So, what happens to the iron particles?
Lined upScattered

6. Lined up

7. Types of magnets

9. SN S N
SN SN
What will happen when the ends of the two bar
magnets are placed close together?

10. SN SN
SN S N
S N SN

11. Magnetic field
• Area of magnetic force around a magnet
• The field lines are closer at the poles rather than the center.
The closer the lines thestronger thespot

12. Draw the magnetic field

13. Draw the magnetic field

14. Draw the magnetic field

15. N s
Draw the magnetic field

16. Earth is a big magnet
What’s different in this picture?

17. The geographical north and south
poles differ than the magnetic ones.

18. What are magnets made of?
iron nickel cobalt

19. Magnetic & Non magnetic materials
1-Iron
2-Steel
3-Nickel
4-Cobalt
1-Copper
2-Gold
3-Silver
4-Leather
5-Wood
6-Rubber
7-Plastic

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

21. The keeper preserves the magnetic
field

22. How do you preserve a bar magnet?

23. Directions of the magnetic field

24. What if I don’t have a natural magnet
but I need one!!!
Can I make a magnet?
Only if we have:
1. Nail (any good electrical conductor material)
2. Coil (any good electrical conductor material)
3. Battery (Electric source)
4. Stapler pins(To test the magnet)

25. • Check the video to see how to make an

26. Industrial Uses of magnets
1-Vehicle and
other Scrapings

27. Industrial Uses of magnets
2-Recycling and
separations

28. Safe handling of Magnets
1) Don’t bang magnets together because they will break and small
pieces will go flying off.
2) Wear safety goggles so that the small pieces will not go into your
eyes.
3) Don’t drop the magnets. Not only will they break, it will affect the
strength of the magnet.
4) Slowly allow the magnets to come together.
5) Wear protective gloves.
6) Health hazards when in contact with food and drinking water.
7) Don’t heat it or place it in high temperatures as it gets weaker.

29. Storage of Magnets
1) Don’t place strong magnets near video tape or audio
tape or parts of the tape will be erased.
2) Don’t place it near credit cards, the magnetic strip on
the back will be erased.
3) Don’t use magnets near mobile phones, interactive
white boards or computers.
4) If placed close to a TV screen or computer monitor, the
screen’s colour will become distorted.
5) Don’t store in moist places, like places where rainwater
or dust can reach.