Magnetism
This attracts iron and materials that contain iron.
What is a magnet?
This is the area of magnetic force around a magnet.
What is a magnetic field?
Wherever there is electricity, this is present.
What is magnetism?
This is a device that measures small currents.
What is a galvanometer?
This is a device that transforms mechanical energy into electrical energy.
What is a generator?
These people discovered the rock called Magnetite.
Who are the Ancient Greeks?
Magnetic field lines are lines that map out this.
What is the invisible magnetic field around a magnet?
The magnetic field produced by a current has a ____ and a _____.
What is strength and direction?
When a wire with this is placed in a magnetic field, electrical energy is transformed into mechanical energy.
What is a current?
This is a constantly reversing current.
What is an alternating current?
These are the two types of poles that magnets have.
What are North and South Poles?
You can see this from a magnetic field.
What are the effects of the magnetic field?
Both solenoids and electromagnets use electric current and coiled wires to produce this.
What is strong magnetic fields?
This device uses an electric current to turn a motor.
What is an electric motor?
This is referred to as DC.
What is a direct current?
A magnetic force is created when this happens.
What is attraction or repulsion between magnetic poles?
This is the result of two or more magnets overlapping.
What is a combined field?
The relationship between electricity and magnetism is called this.
What is electromagnetism?
Trains, fans, microwaves ovens, and clocks all use this.
What is electricity?
Generating electric current from the motion of a conductor through a magnetic field is called this.
What is electromagnetic induction?
This is what magnets with the same poles do.
What is attraction?
The ____ _____ of a location changes.
What is magnetic declination?
This produces a magnetic field.
What is an electric current?
In a galvanometer, an electromagnet is suspended between _____ ____ of two permanent magnets.
What are opposite poles?
This consists of two separate coils of insulated wire wrapped around an iron core.
What is a transformer?