This lesson uses a strong magnet included in the kit to go through materials.
Students explore common materials a magnetic field will penetrate: paper, plastic, water and tables.
Students temporarily induce magnetism in ferromagnetic materials: iron and steel.
They distinguish the differences between temporary and permanent magnets.
to the image on the next slide.
a fundamental law of nature
the slit on the bottom
of your duck.
the plate directly
below the duck.
on the paper plate.
your magnet go through?
or a cloth.
in the cup?
go through water?
the most stainless steel spoons?
Remember some spoons will not stick at all.
the head of the nail. WAIT.
of the nail?
How many paper clips remain?
a temporary magnet
can degauss it.
lose their magnetism over time.
a magnetic field.
with a hammer or degauss magnetic data
on a credit card with a magnet.
the north end of
a magnet repel
Each nail can become a temporary
or induced magnet.
They hold their magnetism only temporarily.