Key Concepts
#1
A magnetic force can attract or repel an object at a distance
#5
The energy used to move against magnetic force is stored as potential energy in the magnetic field
variable
magnetic field line
a line that converts opposite magnetic poles and represents the strength and direction of the magnetic field
potential energy
the energy that is stored in an object or system
#2
In a system of magnets, there is a repelling force between like poles and an attracting force between opposite poles
#6
creating a model of magnetic system and defining its part helps scientist test and explain the relationship between force and energy
model
an object, diagram, or computer program that helps us understand something by making it simpler or easier to see
refute
to provide evidence that goes against a claim
convert
to change from one type to another
#3
The pattern of magnetic field lines around attracting magnets is different from the pattern of magnetic field lines around repelling magnets
#7
Moving a magnet against a stronger magnetic force transfers more energy to the magnetic field
system
a set of interacting parts forming a complex whole
energy
the ability to make things move or change
transfer
to move from one object to another or one place to another
#4
A magnetic force can convert potential energy stored in a magnetic field into kinetic energy
#8
A magnetic force s tronger closer to a magnet
magnetic field
the space around a magnet in which magnetic forces can act on objects
kinetic energy
the energy that an object has because it is moving
electromagnet
a type of magnet in which the magnetic field is produced by an electric current