Magnets, magnetism and magnetic materials

What is a magnet?

Any object that produces a magnetic field

What are magnets made from?

magnetic materials such as iron, nickel, and cobalt

What is the force that attracts or repels an object called?

magnetism

What’s the area around a magnet called?

magnetic field

What are the two poles of a magnet?

north and South Pole

3 uses of electromagnetism?

radiation therapy, speakers, microphones

What is a contact force?

A force that acts when two objects are touching

What is a non-contact force?

a force that acts between two objects that are not touching

Is steel magnetic?

sometimes, not always

are plastic rods magnetic?

Not magnetic

are carbon rods magnetic?

Not magnetic

are rocks magnetic?

Some rocks, not all

Is pure nickel magnetic?

Yes

are aluminium drink cans magnetic?

Not magnetic

are rusty cans magnetic?

Yes

Is a balloon magnetic?

Not magnetic

are copper pipes magnetic?

Not magnetic

Is titanium magnetic?

Not magnetic

Are all metals magnetic?

No

Are all non-metal not magnetic

Yes

Are lots of metals not magnetic?

Yes

Are non-metals electric if they have an electric charge

No

Which 3 materials are attracted to magnetics?

iron, nickel, cobalt

How can we tell that a permanent magnet isn’t used?

The item will be released

What is electromagnetism?

Electromagnetism is the force that combines electricity and magnetism, creating magnetic fields from electric currents and electric currents from changing magnetic fields

What is the right hand rule?

the thumb is the current and the fingers are the magnetic fields

How to change the direction of the magnetic fields?

change the direction of the current

How to make the magnetic fields stronger?

increase the current or coil the wire and add in an iron nail or a core

What are the ends of a magnet called?

Poles

Does a magnet pull magnetic objects before touching them?

Yes

Can a magnet push other magnets away before touching them?

Yes

Does the object stop a few cm away from the magnet?

No

What is a magnetic field?

A region where a magnetic force acts

What is a permanent magnet?

Any object that produces their own magnetic field all the time