Magnetism
Where have you seen magnets? How do we use them?
Roller coasters use magnets to slow down the cars at the end of the ride.
Junk yards use them to separate metals.
MRI machines use them to take images of the body, since our blood is iron based and magnetic.
Electromagnets
Electromagnets uses properties of electric current, which we have just learned about, to make super powerful magnets. These magnets are like the ones used for most industrial applications, like the pictures above.
THE STRONGEST MAGNET IN THE WORLD