8.3 Forces at a Distance

Front

What is a magnetic field?

Back

The space around a magnet in which forces can act on an object.

Front

How does the electric current behave in an audio device compared to a battery?

Back

The electric current can change directions in an audio device.

Front

What happens when two north poles of magnets are brought together?

Back

The two north poles will repel each other.

Front

What is true about magnets?

Back

A magnet is made of magnetic material and always has a magnetic field.

Front

What do the left and right drawings show in terms of magnetic forces?

Back

The left drawing shows attraction and the right drawing shows repulsion of magnetic forces.

Front

What is the definition of a magnet?

Back

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

Front

What is an electromagnet?

Back

A type of magnet in which the magnetic field is produced by an electric current.

Front

What is the difference between permanent magnets and electromagnets?

Back

Permanent magnets maintain a constant magnetic field, while electromagnets can be turned on and off.

Front

What is magnetic attraction?

Back

The force that pulls two magnetic objects towards each other.

Front

What is magnetic repulsion?

Back

The force that pushes two magnetic objects away from each other.