2. After this topic you should be able to:
Use one magnet to produce another
Test the strength of a permanent magnet.
Key terms :
Magnetised
Learning Outcomes
3. 01 Magnetite
A form of iron oxide
04 Horseshoe (U-shaped) magnet
Much stronger than bar magnet
02 Making magnets
Magnetised
Points of our topic
03 Testing magnets
Magnetic force
4. 01
Magnetite
A form of iron oxide which is natuarally
occuring magnetic mineral found in Earth’s
crust
Small pieces of magnetite were used
thousands of years ago to form the first
compasses
These pieces of magnetite were called
lodestones
Lodestones are not very strong magnets
6. Making magnets
Magnets can be made using other other
magnets or by using large electric currents.
The simplest way to produce a new magnet
is to move a strong magnet along a piece of
iron or steel in one direction as shown in the
diagram
After many stokes the new piece of metal
becomes magnetised
13. 04
Horseshoe Magnets
Magnets can be shaped into U or horseshoe
shapes to bring the poles closer together
this makes the magnet much stronger
14. CREDITS: This presentation template was created by Slidesgo,
including icons by Flaticon, infographics & images by Freepik
Do you have any questions?
Thanks!