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2
3
4
5
100
if you put 2 sole ends of a magnet together they
repel
100
Paper clips can become _______ magnets
temporary
100
objects that keep their magnetic properties
permanent magnet
100
conducting pads connect to the battery
brushes
100
what effect do transformers have on voltage
increase or decrease it
200
the strength of a electromagnet can be increased by _____ the number of turns on the wire coil
increasing
200
a current that does not reverse directions
direct
200
device that uses an electromagnet to measure electric current
galvanometer
200
a simple transformer consists of two coils of wire
primary and secondary
200
what happens to the poles when you break a magnet in half
each piece becomes smaller with 2 poles
300
________ motor is used to change electrical energy into mechanical energy
electric
300
where is the strongest magnetic force located?
at the poles
300
a gas gauge is an example of this
galvanometer
300
generators change ______ energy into _____ energy
mechanical energy into electrical energy
300
the area of a magnet where where all of the magnetic fields of a atom are lined up in the same direction
magnetic domain
400
Alternating current from power plants have to ________ voltage before it can enter your home
decrease
400
Moving a wire through a magnetic field creates a ________ current in the wire
electric
400
magnet wrapped around a coil carrying a current around an iron core
temporary magnet
400
current that flows in an electric current carries ______ energy
electrical
400
what is the difference between a step-up transformer and a step-down transformer
step-up increases voltage: step-down decreases voltage
500
increase or decreases the voltage in power lines
transformer
500
region around a magnet where the magnetic force acts
magnetic field
500
switch that reverse the direction of the motor
commutator
500
process of producing an electric current by moving a loop of wire through a magnetic field
electromagnetic induction
500
what are elements that make-up a magnet
cobalt, nickel, iron
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