a current carrying a wire wrapped around an iron core.
a device that converts electric energy into kinetic energy.
northern lights. collision of atoms that are ejected from the sun cause the atoms to emit light.
_______uses a magnetic field to turn motion into electricity.
a current that alternates from positive to negative.
when electrons flow in one direction it is called an _______ ________.
a device that changes the voltage of an alternating current before transmitting the current.
a field that surrounds all magnets.
a group of atoms with magnetic fields all facing one direction.
an atmosphere around the earth that deflects most of the sun's harmful charged particles.