Types of Magnets
The part of a magnet where the magnetic force is strongest.
Magnetic poles
Magnets made from iron, nickel, or cobalt that can be magnetized.
Ferromagnets
Magnets always have these two ends.
North and South poles
A current-carrying wire produces this kind of field.
Magnetic field
Materials that allow magnetic fields to pass through easily.
Magnetic materials (like iron, nickel, cobalt)
Magnets that always have a magnetic field are called this.
Permanent magnets
This type of magnet is made by electricity flowing through a wire coil.
Electromagnet
The line patterns that show the shape of a magnetic field.
Magnetic field lines
Wrapping a wire in a coil and passing current through it creates this.
Electromagnet
Materials that do not allow magnetic fields to pass through easily.
Non-magnetic materials (like wood, plastic, aluminum)
This type of magnet loses its magnetism easily.
Temporary magnets
Magnets that are naturally found in the Earth are called this.
Natural magnets (or lodestones)
The pole of a magnet that points toward the Earth’s North Pole is called this.
Magnetic south pole
Increasing the number of turns in the coil or the current will do this to the electromagnet.
Increase its strength
In the classic coil and magnet experiment, moving the magnet through the coil produces this.
Electric current (or induced voltage)
Like poles of magnets do this when brought together.
Repel
Flexible magnets that can be bent into shapes are often made from this material.
Alnico or flexible magnetic strips
What happens when you cut a magnet in half?
Each piece becomes a smaller magnet with its own north and south poles
Using a nail or iron core inside a coil to strengthen an electromagnet is called this.
ferromagnetic core
When testing a magnet, small pieces of this material are used to visualize the field lines.
Iron filings
The invisible area around a magnet where magnetic forces act is called this.
Magnetic field
These very strong rare-earth magnets are made from neodymium.
Neodymium magnets
Magnetic field strength is measured using this type of instrument.
Gaussmeter/ Magnetometer
Name one practical application of electromagnets in everyday life
Electric bells, motors, relays, maglev trains, cranes for scrap metal
Repeating an experiment multiple times helps improve this aspect of scientific investigation.
Reliability / accuracy