Poles have two forces, they repel or attract.. push pull..[r]
Trang 1Magnets
Trang 2What do we already know?
Trang 3How were magnets
discovered?
Science book page 30-31
Trang 5Page 30
Trang 7P age 31
Trang 9● Magnets have two poles .
One north pole (N) and one south pole (S)
Trang 10Poles have two forces, they repel or
attract.
Trang 11Magnets can attract some
materials.
Trang 12Magnetic and Non-magnetic
Materials attracted by
magnets are called magnetic.
Materials that are not attracted
by magnets are called
non-magnetic.
Trang 13Magnetic and Non-magnetic
Trang 14Magnetic and Non-magnetic
Magnetic materials are always
metals, but not all metals are
magnetic.