ELECTRIC MOTORS
Electric cars use energy from a __________ to move.
battery
A _____________ is the space near a magnet where magnetic force can be detected.
magnetic field
A train that uses magnets to levitate over the tracks is called a ____________.
maglev
How does the electric current from the battery make the wheels of the car turn?
an electric motor
Certain materials that are attracted to a magnet, but cannot be repelled like another magnet can, are called _______________.
ferromagnets
The Maglev Train between Shanghai Airport (China) and Shanghai City travels at ______ mph.
270 miles per hour
Permanent magnets are oriented so that the north and south poles are facing the ________.
coil
A junkyard uses ____________ to pick up and move scrap metal.
electromagnets
____________ means an object is suspended, floating, or hovering, without mechanical support.
Levitation
An electromagnet relies on electricity to generate a _____________.
magnetic field
Unlike a _____________, an electromagnet can be turned on and off easily.
permanent magnet
The Maglev Train has no wheels and does not touch any other material while moving. It is suspended above the track, and so the ________is extremely low.
friction
To switch the poles of the magnetized coil and keep an electric motor running, we need to switch the direction of the ___________ in the electromagnet.
current
Junkyard magnets are usually on the end of a _____________ to lift the scrap metal
crane
______________ levitate the MagLev and propel it forward by switching the poles on copper coils along the track.
Electromagnets