Vocabulary
attract
to pull objects towards one another
variable
something that can be changed and may be measured
magnetic field line
a line that connects opposite magnetic poles and represent the strength and direction of the magnetic field
potential energy
the energy that is stored in an object or system
key concept #3
the pattern of magnetic field lines around attracting magnets is different from the pattern fo magnetic field lines around repelling magnets
repel
to push objects away from each other
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
key concept #4
a magnetic force can convert potential energy stored ina magnetic field to kinetic energy
magnetic pole
one of the two opposite ends of a magnet
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
key concept #5
the energy used to move a magnet against a magnetic force is stored as potential energy in the magnetic field
isolate
to separate or set apart
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
key concept #2
in a system of magnets, there is a repelling force between like poles and an attracting force between opposite poles
key concept #6
creating a model of magnetic system and defining its part helps scientist test and explain the relationship between force and energy