1. Simple Electric Circuit Magnetism and the Electromagnet Mechanical Systems (revision) Developed by: Johnny Freese WCED: METRO SOUTH CAPS Technology Grade 7 Term 3

2. TYPES OF MAGNETS HORSE SHOE BAR MAGNET MANY TYPES

3. MAGNETISED & UNMAGNETISED UNCOMBED HAIR COMBED HAIR UNMAGNETISED MAGNETISED

4. Some metals are attracted to magnets and some are not. iron aluminium nickel steel wood copper plastic

5. A simple electrical circuit 3 volt batteryswitch Light bulb Conducting wire 1,5 V

6. Simple circuit diagram 1,5 volt cell Conducting wire switch Light bulb

7. Summary Component NameComponent PictureSymbol Cell Switch Light Bulb Conducting wires 1,5 V

8. Simple electromagnet N S Iron nail Cell Switch Insulated copper wire

9. Magnetic force! More windings mean a stronger magnet 3 layers of windings

10. Explain how this electromagnet machine works. Many technologies use electromagnets.