Magnets
Any material that attracts iron or material containing iron.
Magnet
one of two points, such as the ends of a magnet, that have opposing magnetic qualities.
Magnetic Poles
the force of attraction or repulsion generated by moving or spinning electric charges.
Magnetic Force
exist in the region around a magnet in which magnetic forces can act.
Magnetic Fields
Lines that map out the invisible magnetic field around a magnet.
Magnetic Field Lines
A device that has a magnet on a needle that allows the magnet to spin freely.
Compass
This is an angle that is found between the magnet, Earth’s geographic North Pole and the North Pole in the northern hemisphere.
Magnetic Declination
The _______ the lines are together, the stronger the magnetic field is.
Closer
Forces that affect objects without touching them
Field Force
An instrument for detecting and measuring small electric currents.
Galvanometer
A machine that converts electrical energy into mechanical energy.
Electric Motor
The ability to move an object over a distance
Energy
The energy associated with electrical currents
Electrical Energy
The energy an object has due to its movement or position
Mechanical Energy
When a wire with a current is placed in a magnetic field, electrical energy transforms into ____________.
Mechanical Energy
Produces a magnetic current. This causes the armature to turn.
Permanent Magnets
a loop of wire that current flows through.
Armature
Conduct current to the rest of the commutator. This does not move.
Brushes
Two semi-circle pieces of metal. It conducts current from the brushes to the armature.
Commutators
The magnetic field always come out of which pole.
North Pole
A compass behaves as it does because the needle as this
A magnet
A north magnetic pole brought near a south magnetic pole will cause them to do what?
Attract
A push or pull
What is a force
Final Speed-Initial Speed/Time
What is acceleration
This part of the Earth is to blame for the magnetic field.
What is the inner core