Electromagnets
what three things do you need to make an electromagnet?
nail, battery, copper wire.
A complete or unbroken path in which electricity flows.
closed circuit
A coil of wire spinning inside of a magnet can form an___________current.
electric
___________ is the attraction or repulsion of magnetic materials.
magnetism
changes_________ energy to mechanical energy.
electrical
when an electric current flows through a wire wrapped around an nail, it makes a _____________.
magnet
It supplies the electricity.
power source
A _________________ spine the coil of wire inside of the magnet.
turbine
the same poles __________.
repel(push away)
Changes electrical energy to _________energy.
mechanical
A magnet loses its magnetism if the electric
a.starts
b.stops
moves the electricity around the path.
conductor
changes ____________ energy to electrical energy.
Mechanical
The opposite poles__________.
attract(pull together)
Takes energy from a battery to spin copper wire inside of a __________ to transform energy into motion.
Magnet
A device made of a battery and a copped wire wrapped around a nail.
electromagnet.
converts the electricity into another from of energy.
transformer
changes mechanical energy to ___________ energy.
electrical
A ________ _______ surrounds a magnet allowing it to apply its forces without touching the magnet.
Magnetic field
Is used as a __________ in a circuit.
Transformer
what will an electromagnet pick up?
wooden toothpick
plastic spoon
metal paper clip
metal paper clip
this does not allow electricity to pass
insulator
Is used as a __________ __________ in a circuit.(outlet).
power source
A magnetic field surrounds a magnet allowing it to apply its_________ without touching the magnet.
forces
Is used as a transformer in a _________
circuit