Magnets And Electromagnets Concept Map

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Magnets and electromagnets concept map
For the teacher – first slide shows the whole concept map the second slide shows a developing map to be used in teaching the ideas contained in the map.
Iron, steel and nickel
Wood, plastic
Magnets
not attracted
attracted
examples
examples
have opposite
Magnetic substances
Non magnetic substances
Poles
North
South
can be
or
Electromagnets
like poles
opposite poles
Repel
Attract
Magnetic field lines are close together
Produced by
Electric current in wire
Magnetic fields
In strong field
Increase strength by
Shown by
These show:
1.Wrap wire into coils (solenoid)
2.Use iron core inside coils
3.Use stronger current
Magnetic field lines
Direction in which N pole of magnet will point
In weak field
Magnetic field lines are far apart
Iron, steel and nickel
Wood, plastic
Magnets
not attracted
attracted
examples
examples
have opposite
Magnetic substances
Non magnetic substances
Poles
North
South
can be
or
Electromagnets
like poles
opposite poles
Repel
Attract
Magnetic field lines are close together
Produced by
Electric current in wire
Magnetic fields
In strong field
Increase strength by
Shown by
These show:
1.Wrap wire into coils (solenoid)
2.Use iron core inside coils
3.Use stronger current
Magnetic field lines
Direction in which N pole of magnet will point
In weak field
Magnetic field lines are far apart