Electromagnets and Magnetism

Front

A coil that is magnetized only when an electric current flows through it is _____________.

Back

an electromagnet

Front

How do you make an electromagnet stronger?

Back

Add more wire coils and/or batteries.

Front

Like poles on a magnet __________.

Back

repel

Front

The Earth produces its own magnetic field. True or false?

Back

True

Front

What is this? (Image of an electromagnet)

Back

electromagnet

Front

What is a magnet?

Back

An object that produces a magnetic field and can attract or repel other magnets.

Front

What happens when you place a north pole and a south pole of two magnets together?

Back

They attract each other.

Front

What is magnetism?

Back

A force that can attract or repel magnetic materials.

Front

What materials are typically attracted to magnets?

Back

Iron, nickel, and cobalt.

Front

What is the difference between a permanent magnet and an electromagnet?

Back

A permanent magnet is always magnetized, while an electromagnet is magnetized only when electric current flows.