magnetism
—The attractive power of some objects
and materials, especially the metals iron and steel.
migrate
—To move from place to place.
motion
—Movement.
neutron
—A particle inside the nucleus of an atom. It
has no charge.
north pole
—One end of a bar magnet. The north pole
of one magnet attracts the south pole of another
magnet.
nucleus
—The center of an atom. It consists of
protons and neutrons.
proton
—A positively-charged particle inside the
nucleus of an atom.
resin
—A thick, sticky liquid made by some trees,
including pine trees.
south pole
—One end of a bar magnet. The south pole
of one magnet attracts the north pole of another
magnet.
static electricity
—The buildup of electric charges on
a surface.
stun
—To shock.
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