Energy
If something is moving it has ________ energy
Kinetic
a line that connects opposite magnetic poles and represents the strength and direction of the magnetic field
True or False
All metals are magnetic
False
Name 2 ways that electromagnets are DIFFERENT from bar magnets
-Can be turned off
-Can change poles
-Rely on electricity
-Can be strengthened or weakened
S S
N N
Vertical Magnets
Repel
what happens to the energy in an object as it begins to move? How does it transform?
The potential energy converts into kinetic energy
the space around a magnet in which magnetic forces can act on objects
Magnetic Field
How can you use magnetic field lines to determine how strong a magnet is?
The closer together the lines are the stronger the magnet
Name 2 ways that electromagnets are the SAME as bar magnets
-Have poles
-Can attract or repel
-Have magnetic fields
N S
S N
Vertical magnets
Attract
How can you increase the potential energy of two repelling magnets
Move them closer together
to push objects away from each other
repel
How can we actually see magnetic field lines at work?
By sprinkling iron shavings around bar magnets and watching them move.
How do we create electromagnets?
Wrap a wire around a conductive metal and connect it to a power source like a battery
N
N
S
S Vertical
Attract eventually
How can you increase the potential energy of two attracting magnets?
Pull them further apart
to move from one object to another or one place to another
Transfer
What happens if you break a magnet in half
Both halves will form a new pole so that they continue to have north and south poles
How are magnets and electricity similar?
They both have charges
Magnets with opposite poles facing each other
Attract
Which car has more potential energy? explain
The green car
a type of magnet in which the magnetic field is produced by an electric current
Electromagnetic
How does energy flow on bar magnets?
North to south pole
How can you switch the poles of electromagnets?
Flip the battery
The magnets used to launch the space shuttle
Repel